Multiple Choice
During which phase of Meiosis II do the sister chromatids separate into individual chromosomes and move toward opposite poles of the cell?
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12. Meiosis
Meiosis II
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Centromeres split and sister chromatids migrate to opposite poles in which phase of meiosis?
A
Metaphase I
B
Telophase I
C
Prophase II
D
Anaphase II
Verified step by step guidance1
Understand the process of meiosis: Meiosis is a type of cell division that reduces the chromosome number by half, creating four haploid cells. It consists of two stages: Meiosis I and Meiosis II, each with specific phases.
Review the role of centromeres and sister chromatids: Centromeres are the regions of chromosomes where sister chromatids are held together. Sister chromatids are identical copies of a chromosome formed during DNA replication.
Recall the events of Meiosis I: In Meiosis I, homologous chromosomes (not sister chromatids) separate during Anaphase I. Centromeres do not split in this stage; instead, homologous pairs are pulled to opposite poles.
Examine the events of Meiosis II: Meiosis II resembles mitosis. During Anaphase II, the centromeres split, and sister chromatids are pulled apart to opposite poles of the cell. This is the key event that distinguishes Anaphase II from other phases.
Match the description to the correct phase: Based on the information provided, centromeres splitting and sister chromatids migrating to opposite poles occurs specifically during Anaphase II of meiosis.
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