Question

In a monohybrid cross between two contrasting traits of flower colour of pea plant Violet color (V) and White color (v), the frequency of occurrence of the V allele is 0.84. Find the frequency of occurrence of the v allele using Hardy - Weinberg equation.

• A. 100%
• B. 16%
• C. 25%
• D. None of the above

Answer 1

The correct option is B 16%

Let us assume that the frequency of occurrence of the allele V is p and that of the allele v is q.
According to the question, p=0.84
Applying the Hardy-Weinberg Equation, $(p+q{)}^2=1$
$\Rightarrow p+q=1$
$\Rightarrow 0.84+q=1$
$\Rightarrow q=1-0.84$
$\Rightarrow q=0.16$
Thus, the frequency of occurrence the v allele is 0.16 or 16 %.