What causes genetic variation in anaphase and telophase?
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Hey dude,
This sometimes happens in mitosis, when sister chromatids fail to separate during anaphase. One daughter cell thus ends up with more chromosomes in its nucleus than the other. Likewise, abnormal separation can occur in meiosis when homologous pairs fail to separate during anaphase I.
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Meiosis and Genetic Variation. ... When cells divide during meiosis, homologous chromosomes are randomly distributed during anaphaseI, separating and segregating independently of each other. This is called independent assortment. Itresults in gametes that have unique combinations of chromosomes.
These new combinations result from the exchange of DNA between paired chromosomes. Such exchange means that the gametes produced through meiosis exhibit an amazing range ofgenetic variation. ... Like mitosis, meiosis also has distinct stages calledprophase, metaphase, anaphase, andtelophase.
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