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.

Question

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.

Quizplus · Accepted Answer

The Answer of 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.