Multiple Choice
During which meiotic phase does crossing over occur?
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12. Meiosis
Introduction to Meiosis
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In meiosis, when does the separation of sister chromatids occur?
A
Anaphase I
B
Anaphase II
C
Prophase II
D
Metaphase 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 daughter cells, each genetically distinct from the parent cell.
Recall that meiosis consists of two consecutive divisions: Meiosis I and Meiosis II. Each division has its own phases: Prophase, Metaphase, Anaphase, and Telophase.
In Meiosis I, homologous chromosomes are separated. During Anaphase I, homologous chromosomes (each consisting of two sister chromatids) are pulled to opposite poles of the cell.
In Meiosis II, the separation of sister chromatids occurs. During Anaphase II, the sister chromatids are finally separated and pulled to opposite poles of the cell.
Therefore, the separation of sister chromatids specifically occurs during Anaphase II of meiosis.
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