Question

How do broad and narrow sense heritability differ?

1) Broad sense heritability is the component of variance that causes organisms to look like their parents
2) Narrow sense heritability is a measure of the proportion of variation that is due to additive genetic effects
3) Narrow sense heritability is not broken down into different genetic components
4) a and c
5) b and c
6) all of the above are true

Answer 1

Broad sense heritability and narrow sense heritability are two measures of heritability in a population. Broad sense heritability represents the total proportion of phenotypic variation that is due to genetic differences among individuals. Narrow sense heritability specifically measures the proportion of phenotypic variation that is due to additive genetic effects.

Step-by-step explanation:

Broad sense heritability and narrow sense heritability are two measures of heritability in a population. Broad sense heritability represents the total proportion of phenotypic variation that is due to genetic differences among individuals. Narrow sense heritability, on the other hand, specifically measures the proportion of phenotypic variation that is due to additive genetic effects, meaning the effects of individual genes.

So, the correct answer to the question is Option 5) b and c: Narrow sense heritability is a measure of the proportion of variation that is due to additive genetic effects, and it is not broken down into different genetic components. Broad sense heritability, on the other hand, includes all genetic components that influence phenotypic variation.