Hardy-Weinberg model

When the altogetherele frequencies in a tribe remain unceasing from componentration to generation, the population is said to be in Hardy-Weinberg resi callable where there is no evolution. Such conditions argon when there is a very bigger population size, no migration, no recompense mutations, random sexual union, and no inborn selection. In a very large population, ge utmostic drift, which is the kind in a populations allele frequencies due to chance, can cause genotype frequencies to miscellany over time. When there is no migration, and gene flow, the transfer of alleles amid populations due to the run of individuals or gametes, occur, the frequence of any genotype that is in utmost frequency among the immigrants increase. When there is no net mutations, by ever-changing on allele into another, mutations change the gene pool. When random mating occurs with certain genotypes, indeed the random mixing of gametes required for Hardy-Weinberg proportion does not occur. When there is no natural selection change in frequencies may occur due to various selection and reproductive success of genotypes and may termination in different frequencies than the predicted frequencies by the Hardy-Weinberg equation.

Hardy-Weinberg equilibrium is determined by evaluating the allele frequencies for each allele (p and q), frequency of homozygotes (p2 and q2), and the frequency of heterozygotes (2pq); and also the two equations, that contend that all alleles sum to ampere-second% (p+q=1) and that all individuals sum to 100% (p2+2pq+q2=1) Below is the work shown to calculate the frequencies of a rabbit population that consists of 100,000 rabbits of which 25,000 are white and 75,000 are agouti. If ! 25,000 rabbits are white then 25,000/100,000=q2 So 0.25=q2 Route 0.25=q 0.5=q Since p+q=1 Then 1-q=p So 1-0.5=0.5 Thus p=0.5 And p2=(0.5)(0.5)=0.25 outright we know 2(0.5)(0.5)=2pq p2=homozygous dominant frequency=0.25 q2=recessive allele frequency=0.25 2pq=heterozygous frequency=0.5 If you extremity to get a full essay, order it on our website: OrderEssay.net

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