CELL DIVISION
MEIOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Genetic variation
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Identical daughter cells
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To replication of genes
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No me acuerdo sir
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Detailed explanation-1: -During meiosis, homologous chromosomes (1 from each parent) pair along their lengths. The chromosomes cross over at points called chiasma. At each chiasma, the chromosomes break and rejoin, trading some of their genes. This recombination results in genetic variation.
Detailed explanation-2: -During meiosis, DNA crossovers (COs) increase genetic diversity. COs are also essential for proper segregation of homologous chromosomes (homologs) at the first division of meiosis (Meiosis I).
Detailed explanation-3: -Prophase I: The nuclear envelope breaks down. The chromatin condenses into chromosomes. Homologous chromosomes containing the two chromatids come together to form tetrads, joining at their centromeres (2n 4c). This is when “crossing over” occurs, which creates genetic variation.