Biology: Assume coat color in rabbits is determined by a two-allele locus with alleles c and c, with c dominant to c. c_ individuals are black and cc individuals are albino. the phenotype frequencies in a population satisfying hardy-weinberg conditions are: black 0.91 albino 0.09 what are the frequencies of the two alleles? what are the frequencies of the three genotypes?

VirusExplanation:A virus is the smallest pathogen and can spread easily....

Assume coat color in rabbits is determined by a

Triciamorrison

31.12.2021

a) frequencies of the two alleles - q=0.3, p=0.7

b) the frequencies of the three genotypes -

$p^2=0.49\\2pq=0.42\\q^2= 0.09$

Explanation:

Given,

Phenotypic frequency of albino is 0.09

Being a recessive allele, the phenotypic frequency will exits in species that have homozygous recessive genotype i,e cc

Thus , the genotypic frequency of "cc" is 0.09

As per Hardy Weinberg's equation, frequency of homozygous recessive genotype is represented by " $q^{2}$ "

So, the frequency of recessive allele will be "q"

$q=\sqrt{q^2} \\q=\sqrt{0.09} \\q= 0.3$

Hence, as per equation p+q=1

$p=1-q\\p=1-0.3\\p=0.7$

Frequency of genotype "homozygous dominant CC" will be

$p^{2} \\0.7^2\\0.49$

As per second equation of Weinberg's equillibrium-

$p^{2} +2pq+q^{2} =1\\0.49+2pq+0.09=1\\2pq=0.42$

Hence,

a) frequencies of the two alleles - q=0.3, p=0.7

b) the frequencies of the three genotypes -

$p^2=0.49\\2pq=0.42\\q^2= 0.09$

0,0(0 оценок)