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23 April, 14:03

Explain why sexual reproduction is a source of genetic variation

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  1. 23 April, 14:17
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    1. Crossing over occurs during prophase I of meiosis I. This exchange of genetic material between non-sister chromatids results in new combination of genes.

    2. The orientation of chromosomes during metaphase may result in the daughter cells recieving different chromosomes.

    3. Random fertilization
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