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Describe how evolution changes the relative frequency of alleles in a gene pool. Why does this happen?
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Describe how evolution changes the relative frequency of alleles in a gene pool. Why does this happen?

User Randall Cook
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Allele frequencies in a population may change due to four fundamental forces of evolution: natural selection, genetic drift, mutations and gene flow. Mutations are the ultimate source of new alleles in a gene pool
User Dbush
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