Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 10.2, Problem 2TC
What would be the genetic consequences for the gametes and offspring if crossing over occurred between two nonhomologous chromosomes?
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A diploid organism has five pairs of chromosomes in each somatic cell. Assuming that no crossing over occurs, how many genetically distinct gametes can this organism produce?
If nondisjunction occurs in a chromosome pair, what will be its effect on the gametes and the offspring in a relation to the alleles present in the chromosome?
If nondisjunction of the sex chromosomes takes place in meiosis I in the male in Figure , what sexual phenotypes and proportions of offspring will be produced?
Chapter 10 Solutions
Biology
Ch. 10.1 - Prob. 1CSCCh. 10.1 - Prob. 1CYLCh. 10.1 - Prob. 2CYLCh. 10.1 - Prob. 3CYLCh. 10.2 - What would be the consequences for the resulting...Ch. 10.2 - What would be the genetic consequences for the...Ch. 10.2 - Prob. 1CSCCh. 10.2 - describe the steps and outcome of meiotic cell...Ch. 10.2 - Prob. 2CYLCh. 10.3 - explain how meiosis and sexual reproduction...
Ch. 10.4 - Prob. 1HYEWCh. 10.4 - Prob. 1CYLCh. 10.4 - describe some of the human genetic disorders that...Ch. 10.4 - Prob. 1TCCh. 10 - Prob. 1MCCh. 10 - Prob. 2MCCh. 10 - Prob. 3MCCh. 10 - Prob. 4MCCh. 10 - Prob. 5MCCh. 10 - Meiotic cell division produces ________ (how many)...Ch. 10 - During ___________ of meiosis 1, paired homologous...Ch. 10 - Prob. 3FIBCh. 10 - Prob. 4FIBCh. 10 - Prob. 5FIBCh. 10 - Prob. 1RQCh. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Describe how meiosis provides for genetic...Ch. 10 - Define nondisjunction, and describe common...Ch. 10 - Many plants car. reproduce sexually or asexually....
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- If nondisjunction of the sex chromosomes takes place in meiosis I in the male, what sexual phenotypes and proportions of offspring will be produced?arrow_forwardDescribe two mechanisms that occur during meiosis thatproduce genetic variation among gametes.arrow_forwardAt what stage of meiosis (I or II) does crossing-over occur?arrow_forward
- How are chain chromosomes formed and will the formation of this result to sterile or fertile gametes?arrow_forwardA cell has four pairs of chromosomes. Assuming that crossing over does not occur, what is the probability that a gamete will contain all of the paternal chromosomes? If n equals the number of chromosomes in a set, which of the following expressions can be used to calculate the probability that a gamete will receive all of the paternal chromosomes: (1/2)n, (1/2)n–1, or n1/2?arrow_forwardWhy does nondisjunction in meiosis I results in a higher proportion of faulty gametes than nondisjunction in meiosis II?arrow_forward
- Assuming that independence assortment occurs during meiosis what types of gametes will form individuals with the following genotypes?arrow_forwardIf nondisjunction occurs during meiosis I, how many of the daughter cells will have an incorrect number of chromosomes after meiosis I and meiosis II are complete? 4 2 1 3arrow_forwardWhat would happen to the chromosome number in gametes and offspring if gametes were formed by the mitotic process instead of the meiotic process?arrow_forward
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