NEET BIOLOGY

Detailed explanation-1: -During anaphase I stage of meiosis, the cell starts to lengthen. The two homologs of each chromosome pair separate and move toward opposite poles, drawn by the microtubules of the spindle apparatus.

Detailed explanation-2: -Anaphase I: In anaphase I, the attachment of the spindle fibers is complete. The homologous chromosomes are pulled apart and move towards opposite ends of the cell.

Detailed explanation-3: -In anaphase I, the homologues are pulled apart and move apart to opposite ends of the cell. The sister chromatids of each chromosome, however, remain attached to one another and don’t come apart.

Detailed explanation-4: -Anaphase. After metaphase is complete, the cell enters anaphase. During anaphase, the microtubules attached to the kinetochores contract, which pulls the sister chromatids apart and toward opposite poles of the cell (Figure 3c). At this point, each chromatid is considered a separate chromosome.

Detailed explanation-5: -Prophase I: The homologous chromosomes line up together. During this time, a process that only happens in meiosis can occur. This process is called crossing over (Figure below), which is the exchange of DNA between homologous chromosomes. Crossing over forms new combinations of alleles on the resulting chromosome.