Name period date assigned date due date returned. Heredity Questions. 1. How many chromosomes are located in each human nucleus?

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1 H Science Name period date assigned date due date returned 1. How many chromosomes are located in each human nucleus? 2. What four bases is DNA made of? What pairs with cytosine? adenine? 4. or the following DNA sequence, write the complimentary strand. G A T A G G T 1

2 H Science Directions: Match the following vocabulary words to their definition. 5. heredity 6. genetics 7. trait 8. nucleus 9. chromosome 10. DNA 11. gene 12. allele 13. dominant 14. recessive A a different form of a gene. an be dominant or recessive. B deoxyribonucleic acid the process in which traits pass from parent to offspring D cell structure where chromosomes are located E found in the nucleus, contains genetic material characteristic controlled by genetic material G segment of a DNA molecule that contains information for a trait H an allele that only requires one copy to see the phenotype I scientific study of heredity an allele that requires 2 copies to see the phenotype. It can be hidden. 2

3 H Science 15 Heredity is defined as the passage of genetic instructions from one generation to the next. Which of the following is NOT an example of these genetic instructions in humans? A height B skin color 16 Which of the following is the correct organization of genetic material from smallest to largest? genes DNA chromosomes cell nucleus G genes chromosomes DNA cell nucleus dimples D spoken language H cell nucleus genes DNA chromosomes chromosomes DNA cell nucleus genes 17 DNA contains four nitrogen bases: adenine (A), guanine (G), thymine (T), and cytosine(). Thymine pairs with adenine, and guanine pairs with cytosine. What would the complimentary strand look like for the following DNA sequence? A G T A A T B G T T A G T A T G A T G A T D A T G A G T 3

4 H Science 18 What structure is the arrow pointing to in the diagram? chromosome 19 The hereditary information that is contained in the nuclei of cells controls all of the following except - G nucleus H cell gene A eye color B skin color pierced ears D hair type 20 Which statement about DNA is correct? G A child s DNA will be unrelated to the mother s or father s DNA. A child s DNA will show similarities to both the mother s and ather s DNA. H A female child s DNA will exactly match the mother s DNA A male child s DNA will exactly match the father s DNA. 21 Lois breeds rats. She was surprised when a white rat with pink eyes was born in a litter of brown rats. She researched to discover that white rat fur and pink eye color were the result of mutation. A mutation means that - A the genetic information didn t copy correctly. B the mother did not get enough nutrition. the white rat belonged to another litter. D the white rat had its father s genes only. 4

5 H Science 22 Which statement about genes is always true? 23 Which of the following is an example of a trait a person may have because of heredity? Each gene is responsible for a single trait. A a blister on a finger G Many genes are required to determine a single trait. H Genes are located on chromosomes within the cell nucleus. B a scar on a forehead green eyes D a pierced ear Both inherited traits and acquired traits are determined by genes. 24 The diagram below shows the results of crossing a pea plant with round seeds and a pea plant with wrinkled seeds. What can be determined from the results of the experiment?- G Smooth shape and wrinkled shape are both recessive traits. Smooth shape and wrinkled shape are both dominant traits. H Smooth shape is a dominant trait, and wrinkled shape is a recessive trait. Smooth shape is a recessive trait, and wrinkled shape is a dominant trait. 5

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