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9 July, 05:12

How does crossing over ensure that organisms living in isolated populations will have genetic variation?

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  1. 9 July, 05:31
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    For example, a population with many different alleles at a single chromosome locus has a high amount of genetic variation ... crossing over (or recombination) between chromatids of homologous chromosomes during meiosis.
  2. 9 July, 08:39
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    Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
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