객관식
Which choice best distinguishes between mitosis and meiosis?
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12. Meiosis
Mitosis & Meiosis Review
객관식
Which of the following statements describes a difference between meiosis II and mitosis in a diploid organism?
A
Sister chromatids align along the metaphase plate in mitosis while homologous chromosomes align in meiosis II.
B
Sister chromatids separate in mitosis and homologous chromosomes separate in meiosis II.
C
Meiosis II occurs in a haploid cell, while mitosis occurs in a diploid cell.
D
Crossing over of chromosomes takes place in meiosis II and does not take place in mitosis.
검증된 단계별 안내1
Understand the context: Meiosis and mitosis are both processes of cell division, but they serve different purposes and occur in different contexts. Mitosis results in two identical diploid cells, while meiosis results in four genetically diverse haploid cells.
Identify the phases: Meiosis consists of two stages, meiosis I and meiosis II. Meiosis I reduces the chromosome number by half, creating haploid cells. Meiosis II is similar to mitosis in that it separates sister chromatids.
Analyze meiosis II: In meiosis II, the cells are already haploid from meiosis I. The sister chromatids align along the metaphase plate and are separated into different cells, similar to what happens in mitosis.
Compare with mitosis: Mitosis occurs in diploid cells and involves the alignment and separation of sister chromatids, resulting in two identical diploid daughter cells. In contrast, meiosis II occurs in haploid cells.
Evaluate the statements: The correct statement is that meiosis II occurs in a haploid cell, while mitosis occurs in a diploid cell. This highlights the key difference in the ploidy level of the cells undergoing these processes.
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