Mitosis & Meiosis Practice Test. 4. Which is the correct sequence for the stages of mitotic cell division represented by the diagrams shown?

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1 1. The diagram shown represents a cell that will undergo mitosis. Which diagrams below best illustrate the nuclei of the daughter cells that result from a normal mitotic cell division of the parent cell shown? 2. New cells are produced within bone marrow as a direct result of. gamete formation. polar body formation. meiotic cell division. mitotic cell division How many chromosomes will be found in each of the two new cells formed as a result of mitotic cell division?. only one-half as many chromosomes as the parent cell. twice as many chromosomes as the parent cell. three times as many chromosomes as the parent cell. the same number of chromosomes as the parent cell 4. Which is the correct sequence for the stages of mitotic cell division represented by the diagrams shown? The process of mitosis usually involves. chromosome duplication and synapsis. N replication and separation of chromatids. tetrad formation and fertilization. reduction in chromosome number and formation of cell plate 6. The phrases below describe several events that occur during the process of mitosis. ) attachment of double-stranded chromosomes to the spindle apparatus ) formation of single-stranded chromosomes, which are moved to opposite ends of the cell ) disintegration of the nuclear membrane ) nuclear membrane formation around each set of chromosomes, forming two nuclei E) synthesis of a spindle apparatus Which sequence represents the correct order of these events?. E. E. E. E page 1

2 7. Meiotic cell division in animals is directly responsible for the. formation of gametes. fertilization of an egg. growth of a cell 11. The process by which homologous chromosomes exchange segments of N is. segregation. crossing-over. fertilization. independent assortment. production of muscle cells 12. Normal mitosis results in the formation of two nuclei that are genetically 8. Which process is represented by the diagram shown?. identical to each other and identical to the original. identical to each other but different from the original. different from each other but identical to the original. different from each other and different from the original 13. What is the normal number of chromosomes in a human zygote? germination. mitotic cell division 14. The gamete produced in the ovary of an animal is the. fertilization. meiotic cell division. egg cell. spore. sperm cell. zygote 9. Occasionally during meiosis, a single homologous chromosome pair may fail to separate. human gamete produced by such a nondisjunction would have a chromosome number of Nondisjunction of the sex chromosomes of a human female during meiosis may result in her daughter inheriting a condition represented by. YY. XXX. XY. XYY 10. In a fruit fly in which the diploid number of chromosomes is 8, the chromosome number in each gamete is normally 16. Which term refers to the orderly series of events that distributes one chromosome from each pair of homologous chromosomes in a primary sex cell to the of a gamete? mitotic cell division. meiotic cell division. fission. deletion page 2

3 17. Synapsis, crossing-over, and disjunction are events that take place during the process of 19. Which situation is a result of crossing-over during meiosis?. mitosis. meiosis. internal fertilization. binary fission. Genes are duplicated exactly, ensuring that offspring will be identical to the parents.. hromatids thicken and align themselves, helping to ensure genetic continuity.. Genes are rearranged, increasing the variability of offspring.. hromatids fail to sort independently, creating abnormal chromosome numbers. 18. diploid cell of a normal human male contains. 22 autosomes and two Y-chromosomes. 22 pairs of autosomes and two Y-chromosomes. 22 pairs of autosomes, one X-chromosome, and one Y-chromosome 20. Which diagram represents a sperm that can unite with a normal egg to produce a zygote that will develop into a normal human male embryo? autosomes and two X-chromosomes.. page 3

4 21. In the diagram shown, which type of change most likely caused the new combination of traits in gametes and?. an alteration in the chemical composition of a gene. a change in the chromosome number due to nondisjunction. a change in the chromosome composition due to crossing-over. an alteration in the number of sugars in N 22. The distribution of chromosomes in one type of cell division is shown in the diagram below. 24. n incomplete diagram of meiosis in the ovary of an animal is shown. Which process is represented in the diagram?. asexual reproduction. meiosis. mitosis. vegetative propagation On the diagram below, draw in the chromosomes of cell. Your drawing should show the usual result of the process of meiosis. 23. Which statement best explains the significance of meiosis in the evolution of a species?. Meiosis produces eggs and sperm that are alike. Meiosis provides form chromosomal variation in the gametes produced by an organism.. Equal numbers of eggs and sperm are produced by meiosis.. The gametes produced by meiosis ensure the continuation of any particular species by asexual reproduction. 25. Meiosis and fertilization are important processes because they may most immediately result in. many body cells. immune responses. genetic variation. natural selection page 4

5 26. own syndrome is a genetic disorder caused by the presence of an extra chromosome in the body cells of humans. This extra chromosome occurs in a gamete as a result of 29. ase your answer(s) to the following question(s) on the diagram below and on your knowledge of biology. The diagram represents a single-celled organism, such as an ameba, undergoing the changes shown.. an error in the process of cloning. an error in meiotic cell division. a gene mutation. replication of a single chromosome during mitosis Process 1 is known as. replication. meiosis. differentiation. digestion 27. The diagram below illustrates the process of cell division. 30. Process 1 and process 2 are directly involved in What is the significance of anaphase in this process?. meiotic cell division. mitotic cell division. fertilization. recombination. naphase usually ensures that each daughter cell has the same number of chromosomes as the parent cell.. naphase usually ensures that each daughter cell has twice as many chromosomes as the parent cell.. In anaphase, the cell splits in half.. In anaphase, the N is being replicated. 31. The genetic content of is usually identical to the genetic content of. but not. both and. but not. both and 28. Offspring that result from meiosis and fertilization each have. twice as many chromosomes as their parents. one-half as many chromosomes as their parents. gene combinations different from those of either parent. gene combinations identical to those of each parent 32. Which cell is normally produced as a direct result of meiosis?. a uterine cell having half the normal species number of chromosomes. an egg having the full species number of chromosomes. a zygote having the full species number of chromosomes. a sperm having half the normal species number of chromosomes page 5

6 33. Some cells involved in the process of reproduction are represented in the diagram below. 35. The diagram below shows a process that affects chromosomes during meiosis. The process of meiosis formed. cell 1, only. cell 3, only This process can be used to explain. why some offspring are genetically identical to their parents. cells 1 and 2. cells 2 and 3. the process of differentiation in offspring. why some offspring physically resemble their parents. the origin of new combinations of traits in offspring 34. Which statement concerning the reproductive cells in the diagram below is correct? 36. The diagram below can be used to illustrate cellular changes.. The cells are produced by mitosis and contain all the genetic information of the father.. If one of these cells fertilizes an egg, the offspring will be identical to the father.. Each of these cells contains only half the genetic information necessary for the formation of an offspring.. n egg fertilized by one of these cells will develop into a female with the same characteristics as the mother. Which row of terms in the chart below best completes the diagram? Row (1) atmospheric oxygen mutations increased mitochondria (2) radiation cancer mutations (3) salt water more cytoplasm two nuclei (4) less sunlight extra genes decreased mutations. (1). (2). (3). (4) page 6

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