Question

In studying the gene pool of a population, you find that 15% of the population is homozygous recessive (tt) for a trait. How would you use this information to solve for the frequency of the dominant T allele?

a. Square root of 0.15
b. 1 – Square root of 0.15
c. 15 ÷ 100
d. 0.152

Answer 1

@Jadeishere

Answer 2

eh?

Answer 3

The Hardy Weinberg Equilibrium is represented by
\[p+q=1\] and
\[p^2+2pq+q^2=1\]
The variables are represented by
p = frequency of the dominant allele in the population
q = frequency of the recessive allele in the population
p2 = percentage of homozygous dominant individuals
q2 = percentage of homozygous recessive individuals
2pq = percentage of heterozygous individuals.
In this question we want to determine what p is.

Answer 4

We are given that \[q^2=.15\] therefore to find q we must take the square root of both sides \[q \approx .38\]. To find p we can use the equation
\[p+q=1,q=.38\].
Therefore we can say
\[p+.38=1,p=.62\].
What answer would correspond to the process I showed here?

Answer 5

^ that explains everything