With few exceptions, we can't use observable traits to measure genetic variation in populations because:

A. observable traits don't vary enough among
individuals to measure.
B. we can't identify enough observable traits
to be useful, even if they could be measured.
C. many traits are encoded by large numbers
of genes.
D. observable traits are products of the
environment as well as the genome.
E. Many traits are encoded by large numbers
of genes, and observable traits are products
of the environment as well as the genome.


E

Biology & Microbiology

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