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Chemistry 13 Online
OpenStudy (stuck-help):

How does crossing-over increase variation in genes?

OpenStudy (brrandyn):

During meiosis, the two (inner) chromatids of the homologous chromosomes exchange a different combination of genes, therefore, increase genetic variation (through gametes).

OpenStudy (nincompoop):

do you know what happens during crossing over or at least draw what it looks like.

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