Quantitative traits: A. tend to vary continuously. B. are usually polygenic. C. have a simple relationship between genotype and phenotype. D. A and B. E. All of the above. Heritability can be estimated in all of the following ways EXCEPT A. elimination of variance components (either environmental or genetic). B. parent-offspring regression. C. correlation in phenotype between related individuals. D. response of a population to selection. E. variance in the value of a phenotype within a randomly mating population. Pigs have been domesticated from wild boars. Would you expect to find higher heritability for weight among domestic pigs or wild boars? Explain your answer. A. Domestic pigs, because they have not undergone intensive artificial selection B. Domestic pigs, because they have not undergone intensive natural selection C. Wild boars, because they have not undergone intensive artificial selection D. Wild boars, because they have undergone intensive natural selection E. Should be the same in both groups since they share a common ancestry