Multiple Choice
In meiosis I, what is the primary outcome of the division?
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9. Mitosis and Meiosis
Meiosis
Multiple Choice
During anaphase II of meiosis, what is the key event that occurs in each cell?
A
DNA replication occurs so each chromosome consists of two sister chromatids.
B
Homologous chromosomes separate and move to opposite poles of the cell.
C
Crossing over occurs between non-sister chromatids, producing chiasmata.
D
Sister chromatids separate at the centromeres and move to opposite poles of the cell.
Verified step by step guidance1
Recall the stages of meiosis, focusing on the differences between meiosis I and meiosis II.
Understand that during meiosis I, homologous chromosomes separate, while during meiosis II, sister chromatids separate.
Identify that anaphase II specifically involves the separation of sister chromatids at the centromeres.
Recognize that DNA replication occurs before meiosis begins, not during anaphase II, so it is not the key event here.
Note that crossing over happens during prophase I, not anaphase II, so the key event in anaphase II is the movement of sister chromatids to opposite poles.
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