객관식
In sexually reproducing organisms, what is the primary purpose of meiosis?
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9. Mitosis and Meiosis
Meiosis
객관식
During telophase I of meiosis, which event most directly occurs?
A
Sister chromatids separate at the centromeres and move to opposite poles.
B
Homologous chromosomes reach opposite poles and nuclear envelopes may reform around each haploid set, often followed by cytokinesis.
C
Homologous chromosomes pair (synapsis) and crossing over occurs between non-sister chromatids.
D
Chromosomes align individually on the metaphase plate with kinetochores attached to opposite spindle poles.
검증된 단계별 안내1
Recall the stages of meiosis I and meiosis II, focusing on the key events that characterize each phase.
Understand that during telophase I, the homologous chromosomes, which were separated during anaphase I, reach opposite poles of the cell.
Recognize that at this stage, the nuclear envelope may reform around each set of chromosomes, creating two haploid nuclei.
Note that sister chromatids remain attached at their centromeres during telophase I and do not separate until anaphase II.
Remember that synapsis and crossing over occur earlier during prophase I, and chromosome alignment on the metaphase plate occurs during metaphase I or II, not telophase I.
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