AP Biology· difficulty 3/5
A student studies a population of peppered moths in an industrial woodland. The dark allele (D) is dominant to the light allele (d). The student counts 360 dark moths and 40 light moths.
Assuming Hardy-Weinberg equilibrium, what is the frequency of the d allele?
0.10
0.68
0.32
0.50
Explanation
Light moths are dd: q^2 = 40/400 = 0.10, so q = sqrt(0.10) = 0.316. The d allele frequency is about 0.32.
Want 10 more like this — adaptive to your weak spots?
Assuming Hardy-Weinberg equilibrium, what is the frequency of the recessive allele q?…
chevron_rightContinuing the previous: what fraction of the population is heterozygous (Aa)?…
chevron_rightIn a large randomly mating population, allele a is recessive lethal — homozygotes aa die before reproducing. Currently q = 0.2. Assuming no other forces, what i…
chevron_right