객관식
Why is meiosis important in sexual reproduction?
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12. Meiosis
Introduction to Meiosis
객관식
What occurs during Anaphase I of meiosis?
A
Sister chromatids separate and move to opposite poles.
B
Homologous chromosomes separate and move to opposite poles.
C
Chromosomes align at the metaphase plate.
D
The nuclear envelope reforms around separated chromosomes.
검증된 단계별 안내1
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.
Focus on Anaphase I: During Anaphase I, homologous chromosomes, which are pairs of chromosomes containing the same genes but possibly different alleles, are separated.
Distinguish between homologous chromosomes and sister chromatids: Homologous chromosomes are pairs of chromosomes, one from each parent, while sister chromatids are identical copies of a single chromosome formed during DNA replication.
Describe the movement during Anaphase I: The homologous chromosomes are pulled apart by spindle fibers and move to opposite poles of the cell. This is a key event that reduces the chromosome number by half.
Clarify the difference from Anaphase II: In Anaphase II, which occurs in Meiosis II, sister chromatids are separated, not homologous chromosomes. This distinction is crucial for understanding the stages of meiosis.
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