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(NEED ASAP!) how does crossing over during meiosis allow for genetic variablity?

(NEED ASAP!) how does crossing over during meiosis allow for genetic variablity?
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(NEED ASAP!) how does crossing over during meiosis allow for genetic variablity?

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User Victorhazbun
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Homologous chromosomes pair, then the chromosomes cross over in certain points. Then the Chromosomes break up and then pair again which results in different genes since they traded. Which is the result of genetic variability.
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User Ananta
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