Answered: A diploid organism has a total of 14…

A diploid organism has a total of 14 chromosomes and about20,000 genes per haploid genome. Approximately how manygenes are in each linkage group?

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter10: Chromosomes, Mitosis, And Meiosis

Section10.4: Sexual Reproduction And Meiosis

Problem 1C

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Question

A diploid organism has a total of 14 chromosomes and about
20,000 genes per haploid genome. Approximately how many
genes are in each linkage group?

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During metaphase I of meiosis, tetrads align along the metaphase plate independently of each other. Therefore, there is a random “shuffle” of maternal and paternal chromosomes in the resulting gametes.The following diagram demonstrates how this works in a diploid cell with four chromosomes (2n=4) . Because there are two pairs of chromosomes and each pair can align in one of two ways during metaphase I, the number of possible variations in the gametes produced is 22 or 4.For an organism that is , there are three pairs of chromosomes, so the number of possible variations in the gametes produced due to independent assortment in metaphase I is 23 or 8. In an organism with a haploid number of 2n=6 , how many possible combinations of maternal and paternal chromosomes can occur in its gametes? a. 72=49 b. 27=128 c.17=1 d. 214=16 384
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