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8 November, 22:27

Relate the cause and effect how does crossing-over increase variation in genes?

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  1. 8 November, 23:25
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    Genetic variation is increased by meiosis

    Recombination or crossing over occurs during prophase I. Homologous chromosomes - 1 inherited from each parent - pair along their lengths, gene by gene. Breaks occur along the chromosomes, and they rejoin, trading some of their genes.
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