Meiosis is the cell division that leads to the creation of the haploid gametes from the reproductive cells. This is divided into two major stages: meiosis I and meiosis II. In meiosis I, the division produces homologs with their sister chromatids intact. In meiosis II, these sister chromatids separate, ultimately producing 4 haploids that are unique from one another.
Why does meiosis result in more genetic variation than can be explained by mutation alone? Select all that apply.
A. because of the events of meiosis I
B. because of the events of meiosis II
C. because of crossing over
D. not all the DNA gets replicated
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