Thursday, February 17, 2011

Blog 3: Explain what microevolution is? What are the three ways that variation occurs?

Microevolution is a change in gene frequency within a population. In genetic variation there are three ways it can occur. The first one being when the crossing over happens during meiosis, or when new alleles are favored during natural selection, and there is also the recombination of chromosomes that occur during sexual reproduction, also known as independent assortments.

An example of microevolution:

gene_pool_sm.gif

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