Friday
April 18, 2014

Homework Help: Biology

Posted by Corie on Tuesday, January 22, 2013 at 11:08am.

What is a molecular clock?

A)a tool scientists use to date fossils
B)a tool scientists use to determine how many mutations a species accumulates over time
C)a tool scientists use to determine how long two species have been evolving independently
D)a tool scientists use to determine how long it takes to sequence a strand of DNA

My Answer: A
I think B could be a possibility too but Im pretty sure its A.

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