Question

Question 2

The allele frequencies for a population are A = 0.6 and a = 0.4. Conditions change and fitness values are now AA = 0.3, Aa = 0.7 and aa = 1.0. What is the allele frequency of A in the next generation?

	A.	between 0.6 and 0.7
	B.	between 0.5 and 0.6
	C.	between 0.4 and 0.5
	D.	0.6
	E.	between 0.3 and 0.4

Question 7

A gene exists in two alleles designated P and p. If 65 copies of this gene are the P allele and 140 are the p allele, what is the allele frequency of P?

a.		0.16
b.		0.46
c.		0.32
d.		0.64

Answer 1

2. The allele A can exist in homozygous (AA) as well as heterozygous (Aa) form.

So the frequency of A will be = frequency of AA + 1/2 frequency of Aa

= 0.3 + 1/2 x 0.7 = 0.3 +0.35

= 0.65

Therefore the correct option is A between 0.6 and 0.7

7. Copies of gene with P allele in a population= 65

Copies of gene with p allele= 140

Total copies of gene= 140+65= 205

Allele frequency= No. of copies of gene with the particular allele/total no of copies of gene

Allele frequency of P= 65/205= 0.32