Wednesday, February 23, 2011

blog 3

In the life of bilogy there are 3 kinds of selections directional,stabilizing, and disruptive. Many people considered directional selection to be the same as directional selection. The features of directional selection is that at the beggining f the selection the genes are recessive but sometime throughtout the process they become fixed. Stabilizing selection is also called ambidirectional selection; it is a type of selection is which genetic diversity decrases as the population stablizes on a particular trait value. Something like stabalizing selection is human birth weight. Disruptive selection describes changes in population genetics in which extreme values of a trait are favored over intermediate clauses. an example of disruptive selection is when rabbits made and there fur color is determine.

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