Assume that an organism exists in which crossing over does not occur, but that a

Question

Assume that an organism exists in which crossing over does not occur, but that all other processes associated with meiosis occur normally. Consider how the absence of crossing over would affect the outcome of meiosis.

Which of the following statements about meiosis would be true if crossing over did not occur? Select all that apply!

a.The daughter cells of meiosis I would be diploid, but the daughter cells of meiosis II would be haploid.
b.The two sister chromatids of each replicated chromosome would no longer be identical.
c.The four daughter cells produced in meiosis II would all be different.
d.The two daughter cells produced in meiosis I would be identical.
e.There would be less genetic variation among gametes.
f.Independent assortment of chromosomes would not occur.

Explanation / Answer

The correct answer is option (E).

e.There would be less genetic variation among gametes.

Crossing over is a genetic exchange that occurs during meiosis.In the absence of crossing over or if the crossing over does not take place, the linked genes are inherited together. As a result of this there would be less genetic variation among the gametes produced.

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