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Multiple Choice
During anaphase II of meiosis, what structures separate?
A
Centromeres
B
Sister chromatids
C
Nucleoli
D
Homologous chromosomes
Verified step by step guidance
1
Understand the context 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.
Recall the phases of meiosis II: Meiosis II includes prophase II, metaphase II, anaphase II, and telophase II. Each phase has specific events that occur.
Focus on anaphase II: During anaphase II, the key event is the separation of sister chromatids. This is different from anaphase I, where homologous chromosomes separate.
Identify the structures involved: Sister chromatids are the identical copies of a chromosome that were duplicated during interphase. They are held together by the centromere.
Recognize the separation process: In anaphase II, the centromeres split, allowing the sister chromatids to be pulled apart by the spindle fibers towards opposite poles of the cell.