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.

Question

Quizplus · Accepted Answer

The example of ocean and lake stickleback fishes indicates that altering the expression of a gene that is associated with development in only some parts of the body can result in changes in morphology. In this case, the gene responsible for the development of body armor is expressed differently in the two populations, leading to differences in morphology.

The Example of Ocean and Lake Stickleback Fishes Indicates That