Population genetics Essay Example | Topics and Well Written Essays - 500 words

Population genetics - Essay ExampleThe equilibrium is the direct consequence of the segregation of alleles at myosis in heterozygotes.Numerically, the equilibrium shows that irrespective of the particular mixture of genotypes in the parental generation, the genotypic distribution after one round of mating is completely stipulate by the allelic frequency p.One consequence of the Hardy-Weinberg proportions is that rare alleles are virtually never in homozygous condition. An allele with a frequency of 0.001 occurs in homomygotes at a frequency of only one in a million most copies of rare alleles are found in heterozygotes. In general, since cardinal copies of an allele are in homozygotes but only one copy of that allele is in each heterozygote, the relative frequency of the allele in the heterozygotes(as foreign to homozygotes) isWhich for q=0.001 is a ratio 9991. Thus, the frequency of heterozygote carriers of rare genes that are deleterious in a homozygous condition is much greater than the frequency of the affected homomygotes.In our derivation of the equilibrium, we assumed the allelic frequency p is the same in sperm and eggs.