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Multiple Choice
Which of the following structures separates during anaphase II of meiosis?
A
Sister chromatids
B
Nuclear envelope
C
Homologous chromosomes
D
Centromeres
Verified step by step guidance
1
Understand the stages of meiosis: Meiosis consists of two consecutive divisions, meiosis I and meiosis II. Each has distinct phases: prophase, metaphase, anaphase, and telophase.
Recall the events of anaphase I: During anaphase I, homologous chromosomes are separated and pulled to opposite poles of the cell. This is a key event that distinguishes meiosis I from meiosis II.
Focus on anaphase II: In anaphase II, the sister chromatids, which were previously duplicated during interphase, are separated. This is similar to what occurs during mitosis.
Identify the structures involved: Sister chromatids are held together by centromeres. During anaphase II, the centromeres split, allowing the sister chromatids to move to opposite poles.
Conclude the process: The separation of sister chromatids during anaphase II ensures that each daughter cell receives an equal and complete set of chromosomes, which is crucial for genetic diversity and proper cell function.