How does crossing over ensure genetic variation?

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How does crossing over ensure genetic variation?

2007-05-02 14:26:29 · 1 answers · asked by cathy c 1 in Science & Mathematics ➔ Zoology

1 answers

Crossing over exchanges parts of chromatids on a synapsed pair of homologous chromosome. That means that the four gametes that are made are all different. Two of the chromatids have the parental combination of alleles, and two of the chromatids have experience crossing over and have new combinations of alleles.

2007-05-02 14:29:56 · answer #1 · answered by ecolink 7 · 1⤊ 0⤋