14. A trait, such as height, has high heritablility because much variation betwe

Question

14. A trait, such as height, has high heritablility because much variation between individuals is the result of genetic variation. However, not all of the variation for height in a population can be attributed to genetic variation alone.

Why does genetic variation not always determine the differences in a given trait between individuals?

a) Changes in the environment can influence the expression of a gene.

b) Genetic drift changes the frequency of genes within a population.

c) New alleles are made through random mutations.

d) Independent assortment leads to new combinations of genes.

Explanation / Answer

Why does genetic variation not always determine the differences in a given trait between individuals:
a) Changes in the environment can influence the expression of a gene.

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