Which of the statements best reflects the extent to which we can distinguish the effects of genes and the environment on the expression of a complex trait?

Note: Question is incomplete i have added full question in this section as i was not able to add in ask for detail section.

Full Question

Which of the following statements BEST reflects the extent to which we can distinguish the effects of genes and the environment on the expression of a complex trait?

A. If one individual is 60 inches tall and another is 70 inches tall, they differ in about 80% of their genes.

B. None of answer options is correct.

C. For identical twins raised in the same environment, height should not differ by more than 20%.

D. In a group of individuals of the same sex, about 80% of the variation in height among individuals is due to genetic differences and 20% is due to environmental differences.

E. About 80% of an individual's height is determined by genes and 20% by environment.

Option D. In a group of individuals of the same sex, about 80% of the variation in height among individuals is due to genetic differences and 20% is due to environmental differences.

Explanation:

Because genetic variations are more common and prominent as traits flows from one generation to next generation while environmental difference are just only exist in that particular environment.

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