Evolution, Natural Selection, and Adaptation

Size: px
Start display at page:

Download "Evolution, Natural Selection, and Adaptation"

Transcription

1 Evolution, Natural Selection, and Adaptation Nothing in biology makes sense except in the light of evolution. (Theodosius Dobzhansky) Charles Darwin ( ) Voyage of HMS Beagle ( ) Thinking about natural selection & collecting supporting evidence ( ) Origin of Species (1859) (HMS Beagle)

2 Alfred Russel Wallace ( ) Natural history collecting trips to Brazil and SE Asia Author of The Malay Archipelagio Wrote a letter to Darwin explaining his idea of natural selection Evolution via Natural Selection Process whereby heritable traits that confer the highest relative reproductive success increase in frequency over evolutionary time as many more individuals of a species are born than can possibly survive and, as there is a frequently recurring struggle for existence, it follows that any being, if it vary however slightly in any manner profitable to itself, under the complex and sometimes varying conditions of life, will have a better chance of surviving, and thus be naturally selected. From the strong principle of inheritance, any selected variety will tend to propagate its new modified form. (Origin of Species, 1859)

3 Definitions Natural selection: Differential reproduction and survivorship among individuals within a population Fitness: relative lifetime reproductive success Survival & Reproduction Adaptation: trait that increases the fitness of an individual, relative to its competitors, in a population. Artificial Selection Process whereby humans selectively breed some varieties over others, causing one or more varieties to increase in frequency (Dugatkin, 2004) Time to go fishing! Time to go fishing! Start with 5 of each color in your pond Mix them up well Use only chopsticks in one hand to fish Keep caught fish in pile At the end of each round, count the number of each color fish that you caught Each surviving fish replicates at the end of each round Keep track of how many of each color you add to the pond

4 Fishing for M & M s Why wouldn t populations evolve to have only one color, for example, only red M&M s? Are we stuck with only five colors of M&M s forever? What if the environment changed to a new color, such as black? What would happen? Why is variation useful? Natural selection occurs when 1. Trait is variable within a population 2. Variation contributes to differences in reproductive success 3. Variation is heritable Variation within a population Due to: 1. Differences in genetic composition 2. Differences in environmental conditions 3. Differences in learning Figure 2.4. Honeybee food delivery.

5 Variation within a population Due to: 1. Differences in genetic composition 2. Differences in environmental conditions 3. Differences in learning Variation may not affect fitness Eastern screech owls show great variation in dispersal direction And 1. Variation in traits may not affect fitness 2. Frequency-dependent selection can maintain different traits in a population Frequency-dependant Selection Frequency-dependant Selection Positive frequencydependent selection: the fitness of a trait increases as it becomes more common Negative frequencydependent selection: the fitness of a trait decreases as it becomes more common

6 Frequency-dependant Selection Origin of new traits New traits originate by: random changes in genetic material (mutation, sexual recombination) survive or disappear due to selection by environmental factors (thus affecting the composition of the population as a whole). Lamarckism Inheritance of acquired characters Useful characters are acquired during the lifetime of an organism and passed on to offspring. Characters that are not useful are diminished. Continuous, gradual change (Jean-Baptiste Lamarck, 1809, Philosophie Zoologique) Genetics Gene: segment of protein-encoding DNA Allele: variant of a gene Gene pool: sum of all alleles in the population Evolution: change in the allelic frequency of a population Heritable: A genetically-based trait that can be passed from parents to their offspring

7 Measures of heritability 1. Parent-offspring regression analysis: Examines the similarity between parents and their offspring in terms of the traits they possess If a trait has a genetic basis, then the trait values of offspring should be similar to the trait values of their parents: there should be a positive relationship between offspring and parent trait values 2. Selection experiment method: Different groups of individuals are subjected to differential selection on the trait in question If artificial selection acting on a trait results in changes in that trait value in subsequent generations, then the trait has a genetic basis Selection experiment Over four generations of selection, found strong changes in exploratory behavior Adaptation and Tinbergen s 4 Levels

8 Adaptationist Approach to Study of Behavior Adaptation What methods are employed to determine if and how a trait that increases the fitness of an individual, relative to others in its population behaviors are adaptive? Aren t all traits adaptive? Constraints on Adaptive Perfection 1. Failure of appropriate mutations to occur Not all traits are adaptive, AND those that are adaptive are not perfect. Selection can t keep up with environmental change

9

Paving the way for Darwin

Paving the way for Darwin Evolution and Natural Selection Introduction to Natural Selection History of Evolutionary Thought Theory of Natural Selection Examples of Natural Selection Chapters 1.4-1.6, Bush Introduction to Natural

More information

Evolution. Diversity of Life

Evolution. Diversity of Life Evolution Diversity of Life 1 Nothing in biology makes sense EXCEPT in the light of evolution. Theodosius Dobzhansky Evolution Charles Darwin in later years 2 History of Evolutionary Thought 3 Early Ideas

More information

Principles of Evolution - Origin of Species

Principles of Evolution - Origin of Species Theories of Organic Evolution X Multiple Centers of Creation (de Buffon) developed the concept of "centers of creation throughout the world organisms had arisen, which other species had evolved from X

More information

How Populations Evolve

How Populations Evolve How Populations Evolve Darwin and the Origin of the Species Charles Darwin published On the Origin of Species by Means of Natural Selection, November 24, 1859. Darwin presented two main concepts: Life

More information

8.1: Scientific Contributions to a Theory of Evolution pg

8.1: Scientific Contributions to a Theory of Evolution pg 8.1: Scientific Contributions to a Theory of Evolution pg. 326-331 Key Terms: paleontology, catastrophism, uniformitarianism, inheritance of acquired characteristics, theory of evolution by natural selection,

More information

1. Geological time. James Hutton. Charles Lyell. Thomas Malthus. I.A. Darwin s evidence. 2. Population growth & struggle for existence

1. Geological time. James Hutton. Charles Lyell. Thomas Malthus. I.A. Darwin s evidence. 2. Population growth & struggle for existence Evolution by Natural Selection (Ch. 24) I. Introduction: Theory of Evolution by Natural Selection A. Darwin s evidence B. Darwin s theory I.A. Darwin s evidence II. The Patterns of Evolution A. Have species

More information

Darwin & Natural Selection

Darwin & Natural Selection Darwin & Natural Selection Early Influential folks Jean-Baptiste Lamarck Scholar who thought about processes that drive evolution Thought species might improve over time because of an inherent drive towards

More information

Evolution Part 1. Unit 10 Miss Wheeler

Evolution Part 1. Unit 10 Miss Wheeler Evolution Part 1 Unit 10 Miss Wheeler Evolution Evolution- The process by which organisms have changed (and will continue changing) over time Charles Darwin- Father of Evolution Traveled for 5 years on

More information

Unit 1 Lesson 2 Theory of Evolution by Natural Selection. Copyright Houghton Mifflin Harcourt Publishing Company

Unit 1 Lesson 2 Theory of Evolution by Natural Selection. Copyright Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 2 Theory of Evolution by Natural Selection Darwin s Voyage What did Darwin observe? Charles Darwin became a naturalist, a scientist who studies nature, during a voyage on the British ship

More information

Biol 405/505. Principles of Organic Evolution. Instructor: Dr. Mark Dybdahl

Biol 405/505. Principles of Organic Evolution. Instructor: Dr. Mark Dybdahl Biol 405/505 Principles of Organic Evolution Instructor: Dr. Mark Dybdahl What is organic evolution? Outline Descent with modification Natural selection Darwin s insight Evolution of the theory of evolution

More information

9.1: Mechanisms of Evolution and Their Effect on Populations pg. 350-359

9.1: Mechanisms of Evolution and Their Effect on Populations pg. 350-359 9.1: Mechanisms of Evolution and Their Effect on Populations pg. 350-359 Key Terms: gene flow, non-random mating, genetic drift, founder effect, bottleneck effect, stabilizing selection, directional selection

More information

1. List and describe Darwin s 5 points in his theory of natural selection. What evidence did he use to prove his theory?

1. List and describe Darwin s 5 points in his theory of natural selection. What evidence did he use to prove his theory? Review for Mod 4 Quiz Concepts: 1. List and describe Darwin s 5 points in his theory of natural selection. What evidence did he use to prove his theory? Overproduction more offspring produced than survive

More information

Evolution. Objectives. Darwin s contribution to science

Evolution. Objectives. Darwin s contribution to science Evolution Dr. Mario A. Fares Evolutionary Genetics and Bioinformmatics Laboratory Department of Genetics, Smurfit Institute of Genetics, TCD Objectives Darwin s contribution to science Significance of

More information

Evolution and Darwin

Evolution and Darwin Evolution and Darwin Evolution The processes that have transformed life on earth from it s earliest forms to the vast diversity that characterizes it today. A change in the genes!!!!!!!! Old Theories of

More information

Explain each of the following unifying concepts in biology:

Explain each of the following unifying concepts in biology: Module 1B Unifying Concepts in Biology What is Biology? The scientific study of living organisms. Objective # 4 Explain each of the following unifying concepts in biology: All of the things we have said

More information

Section Review 15-1 1.

Section Review 15-1 1. Section Review 15-1 1. Beagle 2. theory of evolution 3. varied 4. Darwin s curiosity might have led him to make many observations and ask questions about the natural world. His analytical nature may have

More information

Biology 1406 - Notes for exam 5 - Population genetics Ch 13, 14, 15

Biology 1406 - Notes for exam 5 - Population genetics Ch 13, 14, 15 Biology 1406 - Notes for exam 5 - Population genetics Ch 13, 14, 15 Species - group of individuals that are capable of interbreeding and producing fertile offspring; genetically similar 13.7, 14.2 Population

More information

Mechanisms of Evolution

Mechanisms of Evolution page 2 page 3 Teacher's Notes Mechanisms of Evolution Grades: 11-12 Duration: 28 mins Summary of Program Evolution is the gradual change that can be seen in a population s genetic composition, from one

More information

EVOLUTION AND NATURAL SELECTION NOTES

EVOLUTION AND NATURAL SELECTION NOTES 5. Evolution and Biodiversity State Frameworks Central Concepts: Evolution is the result of genetic changes that occur in constantly changing environments. Over many generations, changes in the genetic

More information

Population Genetics: Changes in the Gene Pool and Gene Frequency

Population Genetics: Changes in the Gene Pool and Gene Frequency Biology 11 Name: Population Genetics: Changes in the Gene Pool and Gene Frequency Evolution through natural selection describes how populations change over time but it is not the only way that populations

More information

Chapter 22. A Historical Perspective 12/19/11. The Greek philosopher Aristotle viewed species as fixed and arranged them on a scala naturae

Chapter 22. A Historical Perspective 12/19/11. The Greek philosopher Aristotle viewed species as fixed and arranged them on a scala naturae Chapter 22 Descent with Modification: A Darwinian View of Life Fig. 22-2 Linnaeus (classification) Hutton (gradual geologic change) Lamarck (species can change) Malthus (population limits) Cuvier (fossils,

More information

Chapter 23: The Evolution of Populations

Chapter 23: The Evolution of Populations Name Period This chapter begins with the idea that we focused on as we closed the last chapter: Individuals do not evolve! Populations evolve. The Overview looks at the work of Peter and Rosemary Grant

More information

Chapter 21 Active Reading Guide The Evolution of Populations

Chapter 21 Active Reading Guide The Evolution of Populations Name: Roksana Korbi AP Biology Chapter 21 Active Reading Guide The Evolution of Populations This chapter begins with the idea that we focused on as we closed Chapter 19: Individuals do not evolve! Populations

More information

Levels and NS: Overview

Levels and NS: Overview Levels and NS: Overview Levels of Analysis in Ethology Proximate Evolutionary (Ultimate) Natural Selection Darwin Natural Selection Tinbergen Darwin Levels of Analysis in Ethology Ethology: the study of

More information

Populations. Population genetics. Modern Evolutionary Synthesis. Outline. Blending Inheritance Example. Lesson: Evolution in more detail

Populations. Population genetics. Modern Evolutionary Synthesis. Outline. Blending Inheritance Example. Lesson: Evolution in more detail Population genetics Populations Group of individuals of the same species in a given area All of the genes in a population = their gene pool All alleles at all loci Evolution in more detail Outline 1. Modern

More information

Malthus, Darwin, and Natural selection: an historical introduction to evolution

Malthus, Darwin, and Natural selection: an historical introduction to evolution Malthus, Darwin, and Natural selection: an historical introduction to evolution Thomas Malthus Charles Darwin nothing in biology makes sense except in the light of evolution Theodosius Dobzhansky, 1973

More information

Darwin observed organisms in diverse environments. Evolution and Diversity. Descent with Modification. Descent with Modification

Darwin observed organisms in diverse environments. Evolution and Diversity. Descent with Modification. Descent with Modification Darwin observed organisms in diverse environments Evolution and Diversity Ch 13 How populations evolve Darwin observed how organisms adapted to their environments The animals living on the Gal√°pagos Islands

More information

Evolution through natural selection: A simple simulation

Evolution through natural selection: A simple simulation Evolution through natural selection: A simple simulation Objectives: This is an observational lab, wherein you will do simulations that help to understand the basic principals of evolution through natural

More information

Chapter 16 Evolution of Populations. 16.1 Genes and Variation Biology Mr. Hines

Chapter 16 Evolution of Populations. 16.1 Genes and Variation Biology Mr. Hines Chapter 16 Evolution of Populations 16.1 Genes and Variation Biology Mr. Hines Figure 1-21 Levels of Organization Section 1-3 Levels of organization Biosphere Ecosystem The part of Earth that contains

More information

Lecture #19. Evolution. Overview: Darwin Introduces a Revolutionary Theory. Chapter 22~ Descent with Modification: A Darwinian View of Life

Lecture #19. Evolution. Overview: Darwin Introduces a Revolutionary Theory. Chapter 22~ Descent with Modification: A Darwinian View of Life Lecture #19 Date Chapter 22~ Descent with Modification: A Darwinian View of Life Overview: Darwin Introduces a Revolutionary Theory A new era of biology began on November 24, 1859, the day Charles Darwin

More information

Summary. 16 1 Genes and Variation. 16 2 Evolution as Genetic Change. Name Class Date

Summary. 16 1 Genes and Variation. 16 2 Evolution as Genetic Change. Name Class Date Chapter 16 Summary Evolution of Populations 16 1 Genes and Variation Darwin s original ideas can now be understood in genetic terms. Beginning with variation, we now know that traits are controlled by

More information

CH 16 Darwin's Theory of Evolution

CH 16 Darwin's Theory of Evolution CH 16 Darwin's Theory of Evolution Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Darwin noticed that many organisms seemed well suited to A. being preserved

More information

Evolution of Phenotypes

Evolution of Phenotypes Evolution of Phenotypes [Background section about the Grant s study of finches on the Galapagos] [see Beak of the Finch].. Daphne Island in the Galapagos Four species of Galapagos finches Peter Grant with

More information

Theory of Evolution. 5 year 5/3/2010. Chapter 13. revolutionary hypothesis. Who Was Charles Darwin?

Theory of Evolution. 5 year 5/3/2010. Chapter 13. revolutionary hypothesis. Who Was Charles Darwin? Theory of Evolution Chapter 13 The person who contributed the most to our understanding of evolution was Charles Darwin http://harrier.users.netlink.co.uk/darwin_sm.jpg In 1831, at age 22, he joined the

More information

1) The Smallest Unit of Evolution

1) The Smallest Unit of Evolution 1) The Smallest Unit of Evolution One misconception is that organisms evolve, in the Darwinian sense, during their lifetimes Natural selection acts on individuals, but only populations evolve Genetic variations

More information

Evolution: Simulating Adaptation by Natural Selection

Evolution: Simulating Adaptation by Natural Selection BIO 101L: Principles of Biology Laboratory Evolution: Simulating Adaptation by Natural Selection Introduction The theory of evolution by natural selection is one of the greatest products of modern science.

More information

Ch. 13 How Populations Evolve Period. 4. Describe Lamarck s proposed theory of evolution, The Theory of Acquired Traits.

Ch. 13 How Populations Evolve Period. 4. Describe Lamarck s proposed theory of evolution, The Theory of Acquired Traits. Ch. 13 How Populations Evolve Name Period California State Standards covered by this chapter: Evolution 7. The frequency of an allele in a gene pool of a population depends on many factors and may be stable

More information

8th Grade Our Genes, Ourselves/Evolution

8th Grade Our Genes, Ourselves/Evolution Read and answer each question carefully. 1) Which of the following is an example of asexual reproduction? A) Flowers from two different plants are mated to produce a seed. B) A worm is split in two: each

More information

How Evolution Works 7/23/2009. In 1831, the research ship H.M.S. Beagle left England for a five-year cruise around the world.

How Evolution Works 7/23/2009. In 1831, the research ship H.M.S. Beagle left England for a five-year cruise around the world. In 1831, the research ship H.M.S. Beagle left England for a five-year cruise around the world. How Evolution Works Charles Darwin used reasoning in reaching his conclusion that natural selection is the

More information

Darwin s Theory of Evolution

Darwin s Theory of Evolution Darwin s Theory of Evolution Evolution Q: What is natural selection? 16.1 What patterns of biodiversity did Darwin observe aboard the Beagle? WHAT I KNOW SAMPLE ANSWER: On each island that Darwin visited,

More information

Downloaded from

Downloaded from Class X: Biology Chapter 9: Heredity and Evolution Chapter Notes Key learning: 1) Variations arise during the process of reproduction. They may be few in asexual reproduction, but many in case of sexual

More information

Biology Slide 1 of 41

Biology Slide 1 of 41 Biology 1 of 41 15-3 Darwin Presents His Case 2 of 41 Publication of On the Origin of Species (Publication of On the Origin of Species Darwin filled notebooks with his ideas about species diversity and

More information

11.1 KEY CONCEPT A population shares a common gene pool.

11.1 KEY CONCEPT A population shares a common gene pool. 11.1 KEY CONCEPT A population shares a common gene pool. Why it s beneficial: Genetic variation leads to phenotypic variation. It increases the chance that some individuals will survive Phenotypic variation

More information

Appendix A Name Worksheet on Natural selection and Galapagos finches 1. In the finch population what are the primary changes that occur over time?

Appendix A Name Worksheet on Natural selection and Galapagos finches 1. In the finch population what are the primary changes that occur over time? Appendix A Lesson Plan for Evolution and Natural Selection: Introductory Presentation on Evolution, Artificial Selection, Natural Selection, and evidence for evolution. Introductory presentation on evidence

More information

Topics on Evolution & Classification" (Chapters 15, 16, 17, 18)" Describe the patterns of diversity Darwin observed on his journeys.!

Topics on Evolution & Classification (Chapters 15, 16, 17, 18) Describe the patterns of diversity Darwin observed on his journeys.! 15.1 Darwin s Observations" Topics on Evolution & Classification" (Chapters 15, 16, 17, 18)" Describe the patterns of diversity Darwin observed on his journeys. 15.2 Ideas that shaped Darwin s thinking

More information

Evolution of Populations

Evolution of Populations Evolution of Populations Evolution Q: How can populations evolve to form new species? 17.1 How do genes make evolution possible? WHAT I KNOW SAMPLE ANSWER: There are different variations of the same gene.

More information

Chapter 13a - Darwin and Evolution

Chapter 13a - Darwin and Evolution 1 Chapter 13a - Darwin and Evolution Evolutionary Ideas before Darwin Plato (427-347 BC) Plato established the notion of fixed essences - unchanging ideal forms that underlie all the variable phenomena

More information

Darwin s Theory Covering Miller and Levine Biology Ch16.1 and 16.2

Darwin s Theory Covering Miller and Levine Biology Ch16.1 and 16.2 Darwin s Theory Covering Miller and Levine Biology Ch16.1 and 16.2 Prevalent Ideas in the 1800 s It was commonly accepted that..... all species were fixed, that they had not changed since they came into

More information

Evolution Nothing in biology makes sense except in the light of evolution

Evolution Nothing in biology makes sense except in the light of evolution Evolution Nothing in biology makes sense except in the light of evolution Theodosius Dobzhansky Content 1.Creation or evolution? 2.General aspects of evolution 3. Evolution of man 4. Molecular evolution

More information

Curriculum Map: Life Sciences Grade 8. Month. Unit. Essential Questions (List 1-3 Essential Questions)

Curriculum Map: Life Sciences Grade 8. Month. Unit. Essential Questions (List 1-3 Essential Questions) Month Unit 2016-2017 Curriculum Map: Life Sciences Grade 8 September Scientific Inquiry October Origin of Life/Cellular Processes Essential Questions (List 1-3 Essential Questions) Learning Outcomes/Objectives

More information

What is evolution? - Helena Curtis and N. Sue Barnes, Biology, 5th ed. 1989 Worth Publishers, p.974

What is evolution? - Helena Curtis and N. Sue Barnes, Biology, 5th ed. 1989 Worth Publishers, p.974 Chapter 16 What is evolution? Evolution is a process that results in heritable changes in a population spread over many generations. Evolution can be precisely defined as any change in the frequency of

More information

Name Date: Doc #: EVOLUTION QUESTIONS ANSWER KEY

Name Date: Doc #: EVOLUTION QUESTIONS ANSWER KEY Name Date: Doc #: EVOLUTION QUESTIONS ANSWER KEY Answer the following questions in complete sentences. Your answer should be in your own words and should be complete thoughts, however may use your notes

More information

4 Darwin and the Development of a Theory

4 Darwin and the Development of a Theory 4 Darwin and the Development of a Theory St a r t i n g i n t h e 1830s, British naturalist Charles Darwin suggested and developed some ideas about evolution that revolutionized the field of biology. Biological

More information

SBI3U Evolution Unit Test Name: Answer Key Date:

SBI3U Evolution Unit Test Name: Answer Key Date: Knowledge & Understanding Application Thinking & Investigation Communication Total /23 /12 /9 /9 /53 Part A: Multiple Choice (1 mark per question) (K/U) 1. According to Darwin s theory of natural selection,

More information

Assessment Schedule 2014 Biology: Demonstrate understanding of genetic variation and change (91157) Evidence Statement

Assessment Schedule 2014 Biology: Demonstrate understanding of genetic variation and change (91157) Evidence Statement NCEA Level 2 Biology (91157) 2014 page 1 of 5 Assessment Schedule 2014 Biology: Demonstrate understanding of genetic variation and change (91157) Evidence Statement NCEA Level 2 Biology (91157) 2014 page

More information

BIOL 1107 Natural Selection Simulation

BIOL 1107 Natural Selection Simulation BIOL 1107 Natural Selection Simulation Introduction Biological evolution can be defined as the change in the allelic frequencies in a population over time. There are several recognized mechanisms of evolution,

More information

Genetics and Natural Selection

Genetics and Natural Selection Genetics and Natural Selection Darwin did not have an understanding of the mechanisms of inheritance and thus did not understand how natural selection would alter the patterns of inheritance in a population.

More information

What is Evolutionary Computation? Evolutionary Computation

What is Evolutionary Computation? Evolutionary Computation What is Evolutionary Computation? Evolutionary Computation An abstraction from the theory of biological evolution that is used to create optimization procedures or methodologies, usually implemented on

More information

Evolution. Darwin. Pre-Darwin. Charles Darwin ( ) Theory of evolution Based on observations: Genetic change in a population over time.

Evolution. Darwin. Pre-Darwin. Charles Darwin ( ) Theory of evolution Based on observations: Genetic change in a population over time. Evolution What is evolution? What lead Darwin to his thoughts 4 Premises of Evolution by Natural Selection Evidence supporting Evolution Genetic change in a population over time. Unifying concept of biology

More information

Nothing in biology makes sense except in the light of evolution.

Nothing in biology makes sense except in the light of evolution. Nothing in biology makes sense except in the light of evolution. Theodosius Dobzhansky Introduction Evolution is the central theme of biology. Adaptation is a universal characteristic of living things.

More information

Evidence of events that happened millions of years ago such as meteor impacts lead to inferences about evolution of life on Earth

Evidence of events that happened millions of years ago such as meteor impacts lead to inferences about evolution of life on Earth Evolution Impacts, Issues Measuring Time Evidence of events that happened millions of years ago such as meteor impacts lead to inferences about evolution of life on Earth Early Beliefs, Confounding Discoveries

More information

EVOLUTION. Which one of these animals is a fish? Evolution is known as "the unifying theory of biology" What does that mean?

EVOLUTION. Which one of these animals is a fish? Evolution is known as the unifying theory of biology What does that mean? EVOLUTION Which one of these animals is a fish? Evolution is known as "the unifying theory of biology" What does that mean? Create a list of statements regarding evolution (in your head). Sort them into

More information

CH. 15: Darwin s Theory of Evolution. Directions: READ ch. 15 in your textbook and use the note outline to help you answer the questions below.

CH. 15: Darwin s Theory of Evolution. Directions: READ ch. 15 in your textbook and use the note outline to help you answer the questions below. CH. 15: Darwin s Theory of Evolution Directions: READ ch. 15 in your textbook and use the note outline to help you answer the questions below. 1. What is a theory? 2. Describe some of the ideas that influenced

More information

Natural Selection Bunny Simulation Created by the HHS Biology Team Feb, 2012.

Natural Selection Bunny Simulation  Created by the HHS Biology Team Feb, 2012. Name: Period: Background Information: Natural Selection Bunny Simulation http://phet.colorado.edu/en/simulation/natural-selection Created by the HHS Biology Team Feb, 2012. In the mid 1800 s a scientist

More information

Daring Darwin - Practice Test

Daring Darwin - Practice Test Name: Class: _ Date: _ Daring Darwin - Practice Test Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Darwin noticed that many organisms seemed well suited

More information

CAMPBELL BIOLOGY. Chapter 13

CAMPBELL BIOLOGY. Chapter 13 Lecture 10 Population Genetics CAMPBELL BIOLOGY Chapter 13 Hox Genes Control development Hox genes need to be highly regulated to get expressed at the right time and correct level to orchestrate mammalian

More information

5 Evolution and biodiversity

5 Evolution and biodiversity 5 Evolution and biodiversity Chapter summary a reminder of the issues to be revised 1 Evolution is the progressive change in living things in geological time, so that living organisms become better able

More information

Chapter 26 Lecture Notes: Population Genetics

Chapter 26 Lecture Notes: Population Genetics Chapter 26 Lecture Notes: Population Genetics I. Introduction A. Darwin s Theory of evolution 1. Variation: Among individuals in a population there is phenotypic and genotypic variation 2. Heredity: Offspring

More information

Microevolution: The mechanism of evolution

Microevolution: The mechanism of evolution Microevolution: The mechanism of evolution What is it that evolves? Not individual organisms Populations are the smallest units that evolve Population: members of a species (interbreeding individuals and

More information

Natural Selection and Evolution. Geology 230 Fossils and Evolution

Natural Selection and Evolution. Geology 230 Fossils and Evolution Natural Selection and Evolution Geology 230 Fossils and Evolution The Study of Evolution Evidence from living and fossil organisms Biology study of living organisms Genetics: Genotype Comparative Anatomy:

More information

STAAR Science Tutorial 51 TEK 7.11C: Natural Selection

STAAR Science Tutorial 51 TEK 7.11C: Natural Selection Name: Teacher: Pd. Date: STAAR Science Tutorial 51 TEK 7.11C: Natural Selection TEK 7.11C: Identify some changes in genetic traits that have occurred over several generations through natural selection

More information

Chapter 22 Descent with Modification: A Darwinian View of Life. 1. Evolution by Natural Selection 12/5/ Evolution by Natural Selection

Chapter 22 Descent with Modification: A Darwinian View of Life. 1. Evolution by Natural Selection 12/5/ Evolution by Natural Selection Chapter 22 Descent with Modification: A Darwinian View of Life 1. Evolution by Natural Selection 2. Evidence for the Evolutionary Process 1. Evolution by Natural Selection Chapter Reading pp. 462-470 1809

More information

Evolution The process in which species change over time

Evolution The process in which species change over time Evolution The process in which species change over time Evidence of evolution: Fossil evidence Comparative embryology Comparative biochemistry Physiological similarities Comparative anatomy Fossil Evidence

More information

Theories of Evolution: A Brief History (take notes from classmates presentations)

Theories of Evolution: A Brief History (take notes from classmates presentations) Packet Theories of : A Brief History (take notes from classmates presentations) Carl Linnaeus (1707-1778) William Paley (1743-1805) Georges Cuvier (1769-1832) Thomas Malthus (1766-1834) Jean Baptiste Lamarck

More information

Objective 3 Evolution & Interactions Among Organisms 11th grade only Evolution THEORY OF EVOLUTION

Objective 3 Evolution & Interactions Among Organisms 11th grade only Evolution THEORY OF EVOLUTION Objective 3 Evolution & Interactions Among Organisms 1. Identify evidence in change in species using fossils, DNA sequences, anatomical similarities, physiological similarities and embryology 11 th grade

More information

Darwin & Natural Selection. Professor Janaki Natalie Parikh

Darwin & Natural Selection. Professor Janaki Natalie Parikh Darwin & Natural Selection Professor Janaki Natalie Parikh jnparikh@verizon.net Linnaeus Sir Carolus Linnaeus (1707-78): familiar name? Known for 2 notable contributions in use today? System of taxonomic

More information

8. Evolution is a general concept. TV shows evolve in ways similar to biological systems. Given this similarity, which would NOT be a good analogy bet

8. Evolution is a general concept. TV shows evolve in ways similar to biological systems. Given this similarity, which would NOT be a good analogy bet 1. All of the following statements are part of the Darwin-Wallace theory of natural selection EXCEPT: a. Characteristics that are acquired during the life of an individual are passed on to offspring. b.

More information

LAB. NATURAL SELECTION

LAB. NATURAL SELECTION Period Date LAB. NATURAL SELECTION This game was invented by G. Ledyard Stebbins, a pioneer in the evolution of plants. The purpose of the game is to illustrate the basic principles and some of the general

More information

CCR Biology - Chapter 10 Practice Test - Summer 2012

CCR Biology - Chapter 10 Practice Test - Summer 2012 Name: Class: Date: CCR Biology - Chapter 10 Practice Test - Summer 2012 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. What is the term for a feature

More information

CHAPTER 13 MEIOSIS AND SEXUAL LIFE CYCLES. Section C: Origins of Genetic Variation

CHAPTER 13 MEIOSIS AND SEXUAL LIFE CYCLES. Section C: Origins of Genetic Variation CHAPTER 13 MEIOSIS AND SEXUAL LIFE CYCLES Section C: Origins of Genetic Variation 1. Sexual life cycles produce genetic variation among offspring 2. Evolutionary adaptation depends on a population s genetic

More information

BEANBAG POPULATIONS GENETICS

BEANBAG POPULATIONS GENETICS BEANBAG POPULATIONS GENETICS How does evolution Awork@? This exercise defines basic terms and describes experimental procedures for teachers to use when explaining concepts in evolution. Students work

More information

Evolution, Biodiversity, and Population Ecology

Evolution, Biodiversity, and Population Ecology Evolution, Biodiversity, and Population Ecology 3 Chapter Objectives This chapter will help students: Explain the process of natural selection and cite evidence for this process Describe the ways in which

More information

Evolution, Biodiversity, and Population Ecology

Evolution, Biodiversity, and Population Ecology Evolution, Biodiversity, and Population Ecology 3 Chapter Objectives This chapter will help you: Explain the process of natural selection and cite evidence for this process Describe the ways in which evolution

More information

Section 10.1. KEY CONCEPT There were theories of biological and geologic change before Darwin.

Section 10.1. KEY CONCEPT There were theories of biological and geologic change before Darwin. Section 10.1 KEY CONCEPT There were theories of biological and geologic change before Darwin. Early scientists proposed ideas about evolution. Evolution is the biological change process by which descendants

More information

Misconception: Evolution is just a theory.!

Misconception: Evolution is just a theory.! Developing a Theory to Explain Change Section 4.2, pages 122-134 Misconception: Evolution is just a theory.! The THEORY of evolution! Formalized by Charles Darwin, is as much theory as is the theory of

More information

Darwinian Natural Selection

Darwinian Natural Selection Darwinian Natural Selection Evidence of Evolution Direct observation: species change Fossils show intermediate forms Extant species show structural, developmental and genetic homology Vestigial traits

More information

Case Studies in Evolutionary Ecology

Case Studies in Evolutionary Ecology 8 The Evolution of Phenotypes Charles Darwin visited the Galapagos toward the end of his voyage on the HMS Beagle. By that time he was already beginning to think about the process of the formation of species

More information

What is the best explanation of what will happen in a population of genetically altered cows?

What is the best explanation of what will happen in a population of genetically altered cows? Mechanisms of Evolution 1. In their first attempts to genetically engineer a cow that will make and secrete human growth hormones in milk, scientists found that they could insert the growth hormone gene

More information

Biology 101 Section 1 The Scientific Study of Life. Biology = the study of living things and their interactions. Bio life logy study of

Biology 101 Section 1 The Scientific Study of Life. Biology = the study of living things and their interactions. Bio life logy study of Biology 101 Section 1 The Scientific Study of Life Biology = the study of living things and their interactions. Bio life logy study of What is life? Consider the meaning of what is alive. Organization

More information

Session 5 Variation, Adaptation, and Natural Selection

Session 5 Variation, Adaptation, and Natural Selection Session 5 Variation, Adaptation, and Natural Selection How is it that life always seems to find a way? Changes both large and small are ever-present in the environment that surrounds life. But despite

More information

Seventh Grade Evolution Assessment

Seventh Grade Evolution Assessment Seventh Grade Evolution Assessment 1a. is the change in a population of organisms over time. a. glaciation b. evolution 1b. Evolution is the change in a population for organisms over time caused by both

More information

Investigation Bird Beak Adaptations Lab Activity

Investigation Bird Beak Adaptations Lab Activity Investigation Bird Beak Adaptations Lab Activity Name Date Period Score Introduction Environmental conditions act as selecting agents because they select organisms with the most beneficial traits to become

More information

Meiosis: Practice Questions #1

Meiosis: Practice Questions #1 Meiosis: Practice Questions #1 1. Which species is most likely to survive changing environmental conditions? A. a species that has few variations B. a species that reproduces sexually C. a species that

More information

To show that students have a basic understanding of the competitive theories pertaining to evolution.

To show that students have a basic understanding of the competitive theories pertaining to evolution. Biology 1407 Assessment Method Tools: EVOLUTION To show that students have a basic understanding of the competitive theories pertaining to evolution. When discussing the concept of evolution, competitive

More information

Monohybrid Inheritance. Intermediate 2 Biology Unit 2: Environmental Biology and Genetics

Monohybrid Inheritance. Intermediate 2 Biology Unit 2: Environmental Biology and Genetics Monohybrid Inheritance Intermediate 2 Biology Unit 2: Environmental Biology and Genetics Inherited Characteristics Inherited characteristics are passed on from one generation to the next through sexual

More information

Population Genetics and Evolution

Population Genetics and Evolution Population Genetics and Evolution Computer 8 As early as the 500s B.C., several Greek philosophers theorized about the union of male and female traits to form offspring. In the 17th century, Leeuwenhoek

More information

Miller & Levine Biology Foundation Edition, 2014

Miller & Levine Biology Foundation Edition, 2014 A Correlation of Miller & Levine Biology To the Oklahoma Academic Standards A Correlation of, BIOLOGY I HS-LS1-1 From Molecules to Organisms: Structures and Processes HS-LS1-1 Students who demonstrate

More information

LAB 11 Natural Selection (version 2)

LAB 11 Natural Selection (version 2) LAB 11 Natural Selection (version 2) Overview In this laboratory you will demonstrate the process of evolution by natural selection by carrying out a predator/prey simulation. Through this exercise you

More information

E - Horton AP Biology

E - Horton AP Biology E - Bio @ Horton AP Biology Unit Evolution Notes Darwin and Evolution Darwin and Evolutionary History A. Darwin's Voyage 1. In 1831, at the age of 22, Charles Darwin accepted a naturalist position aboard

More information

Developing the Theory of Evolution

Developing the Theory of Evolution Developing the Theory of Evolution Chapter 19 Begin by reading Pg s 640-649. Evolution is the core theme of biology Nothing in biology makes sense except in the light of evolution Theodosius Dobzhansky

More information