Multiple Choice
How many cells are produced at the end of meiosis?
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12. Meiosis
Introduction to Meiosis
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During which stage of meiosis do the cells have only one allele for each gene?
A
Metaphase I
B
Telophase I
C
Anaphase II
D
Prophase I
Verified step by step guidance1
Understand that meiosis is a type of cell division that reduces the chromosome number by half, resulting in four haploid cells. It consists of two stages: Meiosis I and Meiosis II.
Recall that during Meiosis I, homologous chromosomes are separated, but each chromosome still consists of two sister chromatids. This means that each cell at the end of Meiosis I still has two alleles for each gene, one on each chromatid.
In Meiosis II, the sister chromatids are separated. This is similar to mitosis, but it occurs in haploid cells. The separation of sister chromatids ensures that each resulting cell has only one allele for each gene.
Focus on Anaphase II, where the sister chromatids are pulled apart to opposite poles of the cell. This is the stage where the separation of alleles occurs, resulting in cells that have only one allele for each gene.
Conclude that Anaphase II is the stage of meiosis where the cells have only one allele for each gene, as the sister chromatids are separated into individual chromosomes.
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