Multiple Choice
If the Hardy-Weinberg equilibrium is met in a population, what is the net effect?
2
views
21. Population Genetics
Hardy Weinberg
Struggling with Genetics?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In a random mating population of Drosophila, 5% of the flies have black bodies (encoded by recessive b) and 95% have brown bodies (encoded by B). Assuming Hardy-Weinberg equilibrium what is the allele frequency of B in the population?
A
0.77
B
0.60
C
0.50
D
0.95
Verified step by step guidance1
Identify the given information: 5% of the flies have black bodies, which is the recessive phenotype (bb). This means the frequency of the homozygous recessive genotype (q^2) is 0.05.
Use the Hardy-Weinberg principle, which states that p^2 + 2pq + q^2 = 1, where p is the frequency of the dominant allele (B) and q is the frequency of the recessive allele (b).
Calculate the frequency of the recessive allele (b) by taking the square root of q^2: q = sqrt(0.05).
Determine the frequency of the dominant allele (B) using the relationship p + q = 1. Solve for p: p = 1 - q.
Verify the calculated allele frequency of B by checking if it matches one of the provided options: 0.77, 0.60, 0.50, 0.95.
Related Videos
Related Practice
