Determine the expected numbers of organisms with genotype BB if the frequencies are as follows in a population with a total size of 150:f(BB)=0.16, f(Bb)=0.48, and f(bb)=0.36.

EVOLUTION OF A POPULATION

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	24
B	72
C	54
D	150

Explanation:

Detailed explanation-1: -When a population is in equilibrium, the BB homozygotes (individuals that carry the same two dominant B alleles) will have a relative genotype frequency of p2: freq (BB) = p2.

Detailed explanation-2: -In a certain population which is in Hardy-Weinberg equilibrium, there are only two eye colours: brown (dominant) and blue (recessive). 16 % have blue eyes in the population.

Detailed explanation-3: -It is possible to apply the Hardy-Weinberg Theorem to loci with more than two alleles, in which case the expected genotype frequencies are given by the multinomial expansion for all k alleles segregating in the population: (p1 + p2 + p3 + . . . + pk)2.

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