Which model BEST explains inheritance of complex traits such as height, weight, and IQ?
A) control of the traits by a single gene with dominant and recessive alleles
B) control of the traits by two genes with independent assortment
C) control of the traits by more than one gene with no effect of the environment
D) control of the traits by more than one gene plus environmental effects
E) control of the traits by environmental factors and not genetic factors

Question

Quizplus · Accepted Answer

Complex traits like height, weight, and IQ are influenced by multiple genes (polygenic inheritance) and environmental factors, making option D the best explanation.

Which Model BEST Explains Inheritance of Complex Traits Such as Height