Question

In a population of an organism, allele ‘A’ has the frequency of 0.7 and allele ‘a’ has the frequency of 0.3. What is the frequency of homozygous dominant genotype?

• A. 0.49
• B. 0.14
• C. 1.4
• D. 4.9

Hint:

{Homozygous dominant frequency = $p^2$}.

Answer 1

The Correct Option is A

Step 1: Applying Hardy–Weinberg principle.
Frequency of homozygous dominant genotype is given by $p^2$.

Step 2: Calculation.
Here, $p = 0.7$.
$p^2 = (0.7)^2 = 0.49$.

Step 3: Conclusion.
Therefore, the frequency of homozygous dominant genotype is 0.49.