Genes are responsible for the expression of most human traits. However, if we see a particular trait (e.g., hair colour) we cannot be certain that it is due to genes. Why?
A)Traits are not inherited.
B)Genotype is not equal to phenotype.
C)Natural selection always alters the genotype.
D)Social Darwinism can come into play.
E)Genetic determinism is weak.

Question

Quizplus · Accepted Answer

Genotype (the genetic makeup) does not always directly determine phenotype (the observable characteristics) because environmental factors and interactions between different genes can influence the expression of traits.

Genes Are Responsible for the Expression of Most Human Traits