wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

In a population with two alleles for a gene locus (P and p), the allele frequency of P is 0.7. What would be the frequency of heterozygotes if the population is in Hardy-Weinberg equilibrium?

A
0.49
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
0.42
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
0.21
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
0.09
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 0.42
Frequency of allele P = 0.7 or 70%, Frequency of allele p = 0.3 or 30%.
From Hardy-Weinberg equilibrium : (p^2 + 2pq + q^2)
2pq (Heterozygous genotype) = 2 x 0.7 x 0.3 = 0.42 or 42%
So, the correct answer is '0.42'.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon