In anaphase I of meiosis, unlike in the anaphase of mitosis,
- A.the centromeres split and sister chromatids separate
- B.the centromeres do not split and whole homologous chromosomes move to opposite poles
- C.the chromosomes line up at the equator
- D.the nuclear envelope is formed
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This single difference is the reason meiosis I is called the reduction division. In anaphase I the two homologous chromosomes of each bivalent are pulled to opposite poles, but each of them still consists of two sister chromatids joined at an undivided centromere.
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