Question

The frequency of the dominant allele in a turtle population living in a local pond showing $4$% of recessive phenotype would be

• A. $0.16$
• B. $0.20$
• C. $0.40$
• D. $0.32$
• E. $0.80$

Answer 1

Answer: (E)

$0.80$

Option (C) is correct

Given,

4% of population has recessive group

$\therefore$ frequency of recessive allele

must be square root of $0.04$

Then, $\sqrt{0.04}=0.20$

Since,

$p+q=1$

where,

$p=$ frequency of dominate allele

$q=$ frequency of recessive allele

we know,

$p+q=1$

$p=1-q$

$p=1-0.20$

$p=0.80$