객관식
What is crossing-over, and during which phase of meiosis does it occur?
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12. Meiosis
Introduction to Meiosis
객관식
During which phase of meiosis are homologous chromosomes separated?
A
Prophase I
B
Metaphase I
C
Anaphase II
D
Anaphase I
검증된 단계별 안내1
Understand the process of meiosis, which consists of two consecutive divisions: Meiosis I and Meiosis II. Each division has several phases: Prophase, Metaphase, Anaphase, and Telophase.
Recall that homologous chromosomes are pairs of chromosomes, one from each parent, that are similar in shape, size, and genetic content.
In Meiosis I, homologous chromosomes are separated. This is different from Meiosis II, where sister chromatids are separated.
During Anaphase I of Meiosis I, homologous chromosomes are pulled apart to opposite poles of the cell. This is facilitated by the spindle fibers attaching to the centromeres of each chromosome.
Review the phases of Meiosis I: Prophase I involves pairing of homologous chromosomes and crossing over, Metaphase I aligns homologous pairs at the cell equator, and Anaphase I separates these homologous pairs.
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