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Multiple Choice
Which event occurs during the anaphase II phase of meiosis II?
A
The nuclear envelope re-forms around each set of chromosomes.
B
Homologous chromosomes separate and move to opposite poles.
C
Chromosomes align at the metaphase plate.
D
Sister chromatids separate and move to opposite poles.
Verified step by step guidance
1
Understand the context of meiosis II: Meiosis is a type of cell division that reduces the chromosome number by half, creating four haploid cells. Meiosis II is similar to mitosis, where sister chromatids are separated.
Identify the phase: Anaphase II is a stage in meiosis II where the separation of sister chromatids occurs.
Recall the key event of anaphase II: During anaphase II, the sister chromatids are pulled apart by the spindle fibers and move towards opposite poles of the cell.
Differentiate from other phases: Unlike anaphase I, where homologous chromosomes separate, anaphase II specifically involves the separation of sister chromatids.
Visualize the process: Imagine the cell with chromosomes lined up at the metaphase plate during metaphase II, and then being pulled apart during anaphase II, resulting in each chromatid moving to opposite ends of the cell.