Bio

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im stuck on these questions for my study guide Please help! i don't want links. thanks


1. Which of the follwoing would be an appropriate measure of the phenotypic variation of a trait in a population?
a) the mean of the trait in the population
b) the standard deviation of the trait
c) the heritability of the trait
d) the allele frequency of genes affecting the trait.

2. Evolutionary change of a trait in a population under the effect of selection can occur only when
a) VE >0
b) h^2 >0
c) h^2 =0
d) VE =0

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