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3. A young entomologist is trying to increase body hairs in Drosophila. His original population has a mean of 7.5 hairs, and

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Narrow sense heritability is a measure of additive genes effect in terms of Phenotypic variation.

h2 = VA/VP

VA: Additive variance due to additive effect of alleles and this will show parent-offspring resemblance.

VP: Phenotypic variance

In the above problem the offspring has mean hair number : 9

The parents selected for mating has mean hairs: 10

h2= 9/10= 0.9

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