A protein that appears to have a constant rate of change over a number of lineages,such as cytochrome C in mammals,can be useful as a
A) transcription factor.
B) transposon.
C) phylogenetic tree.
D) molecular clock.
E) polymorphism.

Question

Quizplus · Accepted Answer

A protein that shows a constant rate of change over a number of lineages can be used as a molecular clock to estimate the divergence time between species. Cytochrome C, for example, has been used as a molecular clock in mammalian evolution.

A Protein That Appears to Have a Constant Rate of Change