13. a) Wasps with long wings are dominant to those with short wings. Just before

Question

13. a) Wasps with long wings are dominant to those with short wings. Just before you passed out from the multiple stings, you managed to determine that 40% of the wasps in a hive had short wings. What percent of the wasps are heterozygous? What percentage are homozygous dominant? b) The frequency of allele A is 19% and allele a is 81%. If the population is in Hardy Weinberg equilibrium, calculate the percentage of heterozygotes. Now assume the population is NOT in H-W equilibrium. Calculate the percent of homozygous recessives.

Explanation / Answer

13.a) Frequency of short wing (q2)= 40% = 0.4

q = 0.632

According to Hardy-Weinberg equilibrium,

p = 1-q = 1-0.632 = 0.368

Heterozygous frequency = 2pq = 2*0.632*0.368 = 0.465

Homozygous dominant frequency = p2 = 0.3682 = 0.135

(Note: To check, p2+2pq+q2 = 1 => 0.4+0.465+0.135=1)

b) p = 19% =0.19; q=81% =0.81

Heterozygous frequency = 2pq =2*0.19*0.81 = 0.308

Recessive frequency can not be calculated as the poplulation is not in HWE.

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