Chemistry NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 11 PCB Single Correct MCQ
Published on: August 13, 2026

In a random mating population frequency of dominant allele is 0.7. What will be the frequency of recessive organism?

A
0.49
B
0.09
C
0.3
D
0.21

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Text Solution

Verified by Experts
The correct answer is:
B

It is given that,

the population frequency of dominant allele (p) is 0.7.

Hence, the population frequency of recessive allele (q) will be .

We know that,

,

where is frequency of homozygous dominant phenotype,

2 pq is frequency of heterozygous dominant phenotype, is frequency of homozygous recessive phenotype.

Hence, frequency of homozygous recessive phenotype will be .

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