Population a consists of 100 hens that are fully isogenic and that are reared in a uniform environment. the average weight of the eggs they lay is 52 g, and the vari- ance is 3.5 g2. population b consists of 100 genetically variable hens that produce eggs with a mean weight of 52 g and a variance of 21.0 g2. population b is raised in an environment that is equivalent to that of population a. what is the environmental variance (ve) for egg weight? what is the genetic variance in population b? what is the broad-sense heritability in population b?