Multiple Choice
In a typical animal cell, what is the product of meiosis II?
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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
Individual chromosomes (each still composed of two sister chromatids) align at the metaphase plate.
B
Nuclear envelopes reform and chromosomes decondense to form two nuclei.
C
Homologous chromosome pairs (tetrads) align at the metaphase plate.
D
Crossing over occurs between non-sister chromatids of homologous chromosomes.
Verified step by step guidance1
Recall that meiosis consists of two sequential divisions: meiosis I and meiosis II, each with distinct events.
Understand that during metaphase I, homologous chromosome pairs (tetrads) align at the metaphase plate, which is different from metaphase II.
Recognize that by metaphase II, the cells are haploid, meaning they contain one set of chromosomes, each still composed of two sister chromatids.
Identify that the key event in metaphase II is the alignment of these individual chromosomes (each with two sister chromatids) along the metaphase plate, preparing for their separation.
Note that nuclear envelopes reform and chromosomes decondense occur after telophase, not during metaphase II, and crossing over happens earlier during prophase I.
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