According to "Evo-Devo" Thinking, an Organism's Body Form Can Be

Multiple Choice

According to "evo-devo" thinking, an organism's body form can be substantially changed

A) only through multiple mutations that produce a large number of new proteins.
B) through mutations that change sexually selected traits.
C) only when changes in the environment directly alter the major protein-coding genes in the organism's genome.
D) through mutations or changes in the expression of one or a few genes that regulate development.