Multiple Choice
During which phase of Meiosis I do homologous chromosomes align on the equator of the cell?
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12. Meiosis
Meiosis I
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During which phase of Meiosis I are the homologous chromosomes pulled toward opposite poles of the cell?
A
Prophase I
B
Metaphase I
C
Anaphase I
D
Telophase I
Verified step by step guidance1
Understand the process of Meiosis I, which is the first division in meiosis where homologous chromosomes are separated into two cells.
Recall the phases of Meiosis I: Prophase I, Metaphase I, Anaphase I, and Telophase I, each with distinct events.
Focus on Anaphase I, where homologous chromosomes (pairs of chromosomes) are pulled apart by spindle fibers toward opposite poles of the cell. This is a key event in reducing the chromosome number by half.
Compare this to other phases: Prophase I involves chromosome condensation and crossing over, Metaphase I involves alignment of homologous pairs at the cell's equator, and Telophase I involves the formation of two nuclei around separated chromosomes.
Conclude that the correct phase for the pulling of homologous chromosomes toward opposite poles is Anaphase I, as this is the defining characteristic of this phase.
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