College Of Kinesiologists Of Ontario (COKO) Registration Practice Exam

Which process during sexual reproduction most directly increases genetic variation among offspring?

Producing identical daughter cells by mitosis Copying DNA without any rearrangement Combining genetically different gametes at fertilisation Repairing damaged body tissues

Correct Answer:

Combining genetically different gametes at fertilisation

Explanation:

Sexual reproduction combines genetic information from two gametes. Because gametes can contain different allele combinations, fertilisation creates new combinations of alleles in offspring.

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