sample_ques-_exam_2 - Chap 15 1.Consider an organism whose...

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Chap 15 1.Consider an organism whose karyotype shows it to have a total of 60 chromosomes. How many chromosomes would be contained in the sperm of this organism? A. 23 B. 30 C. 46 D. 60 E. 90 2. Place the following events of mitosis in the correct order. I. Sister chromatids align on the metaphase plate. II. The cleavage furrow forms. III. The nuclear membrane breaks up. IV. Sister chromatids condense. V. Sister chromatids separate. A. I, II, III, IV, V B. III, IV, I, V, II C. IV, III, I, V, II D. III, II, I, IV, V E. IV, I, III, V, II 3. The process by which haploid cells are produced from diploid cells is called A. sexual reproduction. B. mitosis. C. fertilization. D. meiosis. E. reduction. 4. In a haploid dominant species A. the multicellular organism is diploid and the gametes are haploid. B. the multicellular organism is haploid and the gametes are diploid. C. diploid cells are produced by mitosis and haploid cells are produced by meiosis. D. the zygote is haploid. E. the multicellular organism is haploid and the zygote is diploid.
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that all the chromosomes are metacentric. This is going to make it difficult to identify A. which is the p arm of the chromosome. B. which is the q arm of the chromosome. C. the unique G banding for each chromosome. D. if the chromosomes are telocentric. E. both the p and q arms of the chromosomes. 6. Consider a diploid species where n=5. If an individual of this species was found to have 11 chromosomes, it would be categorized as A. polyploid. B. aneuploid. C. trisomic. D. monosomic. E. both aneuploid and trisomic. 7. Chromosomes inside the nucleus do not overlap with each other because A. chromosomes are repelled from each other by their negative charges. B. they all have a specific chromosome territory that is determined by the nuclear matrix. C. the histone tails of the nucleosomes are repelled from each other by their negative charges. D. the chromosomes are highly compacted by the formation of radial loop domains. E. localized regions of the chromosomes are heterochromatic. 8. In mitosis, the main difference between plant and animal cells is that A. plants do not undergo cytokinesis. B. plants produce a cell plate to segregate the daughter nuclei, while animals form a cleavage furrow. C. plants have a central vacuole, while animal cells do not. D. plants produce a cell membrane in cytokinesis, while animals form a cell plate. E. in plants, kinetochore microtubules shorten and draw chromosomes toward the poles; in animals, polar microtubules lengthen to push chromatids apart. 9. A species that has three sets of homologous chromosomes can have up to __different combinations of chromosomes in the gametes. A. 3
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This note was uploaded on 05/18/2011 for the course BIOL 101 taught by Professor Mallick during the Summer '08 term at University of Louisiana at Lafayette.

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sample_ques-_exam_2 - Chap 15 1.Consider an organism whose...

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