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Home Q & A Board Biology-Related Homework Help General Biology
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mishaaus mishaaus
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12 years ago
in a randomly mating population of drosophila 4% of the flies have black bodies an automosol recessive trait and 96% have brown bodies. This population is assumed to be in hardy weinberg equilibrium.

What is the frequency of the dominant allele for a population of 10 000 drosophila?


a. 0.8
b. 0.4
c.0.96
d.0.2

If a researcher samples 10 000 drosophila from this population the number of flies expected to be homozygous dominant for body colour is?
a.400
b.3200
c.6400
d.9600
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Answer rejected by topic starter
wrote...
#1
12 years ago
96% of the bodies are brown, and that can be a combination of BB or Bb.

B + b = 1

We don't know however how many B's and b's there are. By finding one, we can figure out the other.

I've always hated the Hardy-Weinberg principal. Frowning Face
wrote...
#2
Staff Member
11 years ago
Could you update us with the answer?
- Master of Science in Biology
- Bachelor of Science
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