HUMAN BIOLOGY
16th Edition
ISBN: 9781260233032
Author: Mader
Publisher: RENT MCG
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Chapter 21.2, Problem 3CYP
Using a dihybrid cross as an example (see Fig. 21.6), explain how the gametes are formed by the process of meiosis.
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Briefly explain why there is no interphase in between Meiosis I and Meiosis II.
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Chapter 21 Solutions
HUMAN BIOLOGY
Ch. 21.1 - Distinguish between a genotype and a phenotype.Ch. 21.1 - Define allele, gene, dominant, and recessive as...Ch. 21.1 - Prob. 3LOCh. 21.1 - Define the following terms:Â gene, allele, locus,...Ch. 21.1 - Prob. 2CYPCh. 21.1 - Prob. 3CYPCh. 21.2 - Prob. 1LOCh. 21.2 - Calculate the probability of a specific genotype...Ch. 21.2 - Prob. 1CYPCh. 21.2 - Prob. 2CYP
Ch. 21.2 - Using a dihybrid cross as an example (see Fig....Ch. 21.3 - Interpret a human pedigree to identify the pattern...Ch. 21.3 - Prob. 2LOCh. 21.3 - Solve the following: In a pedigree, all the...Ch. 21.3 - Prob. 2CYPCh. 21.3 - Explain why some incidences of autosomal recessive...Ch. 21.4 - Prob. 1LOCh. 21.4 - Prob. 2LOCh. 21.4 - Prob. 3LOCh. 21.4 - Prob. 1BTSCh. 21.4 - Prob. 2BTSCh. 21.4 - Prob. 1CYPCh. 21.4 - Prob. 2CYPCh. 21.4 - Discuss the potential evolutionary advantages of...Ch. 21.5 - Prob. 1LOCh. 21.5 - Prob. 2LOCh. 21.5 - Prob. 1CYPCh. 21.5 - Prob. 2CYPCh. 21.5 - Discuss why X-linked disorders are more common...Ch. 21.5 - Prob. 1BTSCh. 21.5 - Prob. 2BTSCh. 21 - Prob. 1ACh. 21 - 2. Which of the toll awing terms refers to...Ch. 21 - Prob. 3ACh. 21 - Prob. 4ACh. 21 - 5. The genotype of an individual with the dominant...Ch. 21 - Prob. 6ACh. 21 - Prob. 7ACh. 21 - Prob. 8ACh. 21 - Which of the following disorders is caused by a...Ch. 21 - Prob. 10ACh. 21 - Prob. 11ACh. 21 - Prob. 12ACh. 21 - Which of the following terms may be used to...Ch. 21 - Prob. 14ACh. 21 - Prob. 15ACh. 21 - Prob. 1TCCh. 21 - Prob. 2TCCh. 21 - Prob. 3TC
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- List two differences between meiosis I and meiosis II.arrow_forwardDraw a diagram of meiosis in a cell where 2n = 6, in a case where there is interchromosomal mixing. Use a clearly labelled colour code (what does each colour represent?) to represent the chromosomes.arrow_forward1)Discusses why Meiosis I is referred to as reduction division and why Meiosis II is essentially like Mitosis. 2)Discusses where problems are likely to occur in Meiosis and what these problems could lead to.arrow_forward
- Consider a diploid cell that has 2n = 4 chromosomes: one pair of metacentric chromosomes and one pair of acrocentric chromosomes. Suppose that this cell undergoes nondisjunction, giving rise to an autotriploid cell (3n). The triploid cell then undergoes meiosis. Draw the different types of gametes that could result from meiosis in the triploid cell, showing the chromosomes present in each type. To distinguish between the different metacentric and acrocentric chromosomes, use a different color to draw each metacentric chromosome; similarly, use a different color to draw each acrocentric chromosome.arrow_forwardexplain how the Law of Segregation and the Law of Independent Assortment relate directly to chromosome movements during meiosis. Which particular stages of meiosis demonstrate each of these two laws?arrow_forwardA diploid organism produces four gametes from one parent cell through the process of meiosis. Two gametes are found to have 7 chromosomes and two gametes are found to have 5 chromosomes. A) Is this the expected number of chromosomes that would be found in each gamete following a normal cycle of meiosis? If yes, explain why. If no, explain why not and describe how the gamete situation described above occurred. B) Determine the number of homologous chromosome pairs that the original parent cell contained, before meiosis began. Explain how you determined this value.arrow_forward
- Consider a diploid cell that has 2 n = 4 chromosomes: one pair of metacentric chromosomes and one pair of acrocentric chromosomes. Suppose that this cell undergoes nondisjunction, giving rise to an autotriploid cell (3 n). The triploid cell then undergoes meiosis. Draw the different types of gametes that could result from meiosis in the triploid cell, showing the chromosomes present in each type. To distinguish between the different metacentric and acrocentric chromosomes, use a different color to draw each metacentric chromosome; similarly, use a different color to draw each acrocentric chromosome.arrow_forwardAn individual is heterozygous for a reciprocal translocation, with the following chromosomes: A • B C D E F A • B C V W X R ST • U D E F R ST • U V W X Q. Draw a picture of these chromosomes pairing in prophase I of meiosis.arrow_forwardexplain how Errors in meiosis cause aneuploidy.arrow_forward
- Consider a diploid cell that has 2 n = 4 chromosomes: one pair of metacentric chromosomes and one pair of acrocentric chromosomes. Suppose that this cell undergoes nondisjunction, giving rise to an autotriploid cell (3 n). The triploid cell then undergoes meiosis. Draw the different types of gametes that could result from meiosis in the triploid cell, showing the chromosomes present in each type. To distinguish between the different metacentric and acrocentricchromosomes, use a different color to draw each metacentric chromosome; similarly, use a different color to draw each acrocentric chromosome.arrow_forwardList and describe two specific differences between meiosis I and meiosis II.arrow_forwardDraw a simple sketch illustrating how nondisjunction in meiosis can lead to Down syndrome.arrow_forward
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