In the case of complex traits,
A) all of the genes involved are present on the same chromosome.
B) at least three genes are involved.
C) the phenotype is determined strictly by environmental factors.
D) there can be a wide range of phenotypes.
E) the trait is never influenced by environmental factors.

Question

Quizplus · Accepted Answer

Complex traits are influenced by multiple genes and environmental factors, leading to a wide range of potential phenotypes. Therefore, choice D is the correct answer. Choice A is incorrect because the genes involved in complex traits can be located on any chromosome. Choice B is partially correct, as at least two genes are involved, but there could be more. Choice C is incorrect because the phenotype is influenced by both genetic and environmental factors. Choice E is also incorrect, as environmental factors can have a significant impact on complex traits.

In the Case of Complex Traits