Question

**80 Points** Please Answer!

In a population, the dominant allele of a certain trait occurs 84% of

 the time.

a) What is the frequency of the recessive phenotype?

b) What is the frequency of the dominant allele?

c) What is the frequency of the heterozygote genotype?

Answer 1

Hey there! So to find these answer to your questions, you must find the dominant allele a recessive allele

To do that you add the P and the q to equal 1

Then Multiply it times to

Now each will equal

A.2.6%

B.84%

C.26.9%

Answer 2

So let's make p = dominant allele and q = recessive allele
p+q = 1, and (p+q)^2 = 1^2 thus
p^2 + 2pq + q^2 = 1, where p^2 = homozygous dominant, 2pq = heterozygous, and q^2 = homozygous recessive
So if p = .84, then q = 1-.84 = .16

a) recessive phenotype = q^2 = (.16)^2 = .0256
= 2.6%

b) dominant allele = p = .84 = 84%

c) heterozygous genotype = 2pq = 2(.84)(.16)
= .269 = 26.9%