Examine Figure 21

Multiple Choice

Examine Figure 21.15. If you wanted to use a molecular clock to date a relatively recent divergence eventone that occurred in the last 100 million years or sowhich of the four types of genes would make the BEST clock? Why?

A) Fibrinopeptides, because they have changed the most over that time period.
B) A histone gene, because it has changed relatively little over that time.
C) Cytochrome c, because it has changed relatively little over that time.
D) A histone gene, because it has changed the most over that time period.
E) Hemoglobin, because of its steady rate of change.