The Example of Ocean and Lake Stickleback Fishes Indicates That

Multiple Choice

The example of ocean and lake stickleback fishes indicates that morphology can be altered by

A) changing only the sequences of protein-coding genes.
B) altering the expression of a gene that is associated with development in only some parts of the body.
C) environmental factors (such as pollution) .
D) the elimination of a gene from a population, which leads to loss of the body armor.