Multiple Choice
In meiosis, what is the specific purpose of meiosis II?
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9. Mitosis and Meiosis
Meiosis
Multiple Choice
During meiosis, what is the primary event that occurs during telophase I?
A
Crossing over occurs between non-sister chromatids of homologous chromosomes, forming chiasmata.
B
Sister chromatids separate at the centromeres and move to opposite poles.
C
Homologous chromosomes reach opposite poles, nuclear envelopes may reform, and cytokinesis often produces two haploid cells with sister chromatids still joined.
D
Chromosomes align individually along the metaphase plate with independent assortment of sister chromatids.
Verified step by step guidance1
Recall the stages of meiosis I and their key events: prophase I (crossing over), metaphase I (homologous chromosomes align), anaphase I (homologous chromosomes separate), and telophase I.
Identify that during telophase I, the main event involves the movement and positioning of homologous chromosomes that have already separated during anaphase I.
Understand that in telophase I, homologous chromosomes reach opposite poles of the cell, which is a critical step before the cell divides.
Recognize that nuclear envelopes may reform around each set of chromosomes, helping to re-establish nuclei in the two new cells.
Note that cytokinesis often occurs after telophase I, resulting in two haploid cells where sister chromatids remain joined, setting the stage for meiosis II.
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