Multiple Choice
After the homologous pairs are separated during meiosis I, which of the following events occurs next?
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9. Mitosis and Meiosis
Meiosis
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A cell shows alignment of chromosomes along the equatorial plate during meiosis. What will happen next?
A
DNA replication will occur.
B
Homologous chromosomes will be separated and pulled toward opposite poles.
C
The nuclear envelope will reform around the chromosomes.
D
Sister chromatids will be separated and pulled toward opposite poles.
Verified step by step guidance1
Identify the stage of meiosis described: alignment of chromosomes along the equatorial plate occurs during metaphase. In meiosis, this can be metaphase I or metaphase II.
Recall that in metaphase I, homologous chromosomes (each consisting of two sister chromatids) line up in pairs along the equatorial plate, whereas in metaphase II, individual chromosomes line up.
Understand what happens after metaphase I: the homologous chromosomes are separated and pulled toward opposite poles during anaphase I.
Note that DNA replication does not occur after metaphase; it happens only once before meiosis begins, during interphase.
Recognize that sister chromatids are separated during anaphase II, not immediately after the alignment of homologous chromosomes in metaphase I.
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