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

Population genetics - Essay ExampleThe residuum is the direct consequence of the segregation of alleles at meiosis in heterozygotes.Numerically, the equilibrium shows that irrespective of the particular premix of genotypes in the p arental generation, the genotypic distribution after wiz round of mating is completely undertake 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 severally heterozygote, the relative frequency of the allele in the heterozygotes(as opposed 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 g reater 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.