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Home Q & A Board Science-Related Homework Help High School Level Science
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RJW RJW
wrote...
11 years ago
Why does the Hardy-Weinberg model only work for calculating the frequencies of genes in breeding populations as long as there's random mating and an absence of selection, random genetic drift, and mutation?
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wrote...
#1
11 years ago
Because non-random mating, selection, drift, and mutation are all factors that can influence changes in allelic frequencies. The H-W Principle says that without these things, frequencies will remain the same from one generation to the next.

Of course, the only thing that we are sure of in Nature is the presence of Natural Selection, so the H-W Principle is only that; A Principle.  It never holds true in a naturally-occurring population.
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