Multiple Choice
In sexually reproducing organisms, what is the primary function of meiosis?
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9. Mitosis and Meiosis
Meiosis
Multiple Choice
During metaphase II of meiosis, what is the key event that occurs in each haploid cell?
A
Sister chromatids separate and move to opposite poles of the cell.
B
Individual chromosomes (each still consisting of two sister chromatids) align at the metaphase plate.
C
Homologous chromosome pairs (tetrads) align at the metaphase plate and undergo crossing over.
D
Nuclear envelopes reform around two sets of chromosomes and cytokinesis produces four haploid cells.
Verified step by step guidance1
Recall the stages of meiosis, focusing on the differences between meiosis I and meiosis II.
Understand that meiosis I separates homologous chromosomes, reducing the chromosome number from diploid to haploid, while meiosis II separates sister chromatids.
Identify that metaphase II occurs in haploid cells, where chromosomes align at the metaphase plate.
Recognize that during metaphase II, individual chromosomes, each consisting of two sister chromatids, line up at the metaphase plate, preparing for their separation.
Note that the key event in metaphase II is the alignment of these chromosomes, not the separation itself, which happens in anaphase II.
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