Biology 8th Edition by Kenneth Mason ,Jonathan Losos,Susan Singer,Peter Raven,George Johnson

Exercise 8

There are several ways in which phenotypic diversity among major groups of organisms can be explained. On one end of the spectrum, such differences could arise out of differences in many genes that control development. On the other end, small sets of genes might differ in how they regulate the expression of various parts of the genome. Evaluate which view represents our current understanding.