AP Biologyhardmcq1 pt
Which is NOT a source of genetic variation in sexual reproduction?
A.Mitosis
B.Crossing over
C.Independent assortment
D.Random fertilization
Explanation
Core Concept
Crossing over, independent assortment, and random fertilization are major mechanisms that generate genetic variation in sexual reproduction. Mitosis normally preserves chromosome number and is not a mechanism for reshuffling parental alleles during sexual reproduction. Mutations can still arise during mitotic DNA replication, so 'mitosis produces no variation' is too absolute.
Correct Answer
AMitosis
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