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gary21 gary21
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9 years ago Edited: 9 years ago, bio_man
In a randomly mating population of Drosophila, 2% of the flies have black bodies ( an autosomal, recessive trait) and the rest have brown bodies. This population is assumed to be in Hardy Weinberg equilibrium. If a researcher samples 10 000 Drosophila from this population, the number of flies expected to be homozygous dominant for body colour is?
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wrote...
Staff Member
9 years ago
0.02 * 10 000 = 200 are aa

q^2 = 0.02
q = 0.1414

p + q = 1
p = 1 - 0.1414
p = 0.8586

0.8586^2 = 0.7371, so 73% are dominant homozygous.
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