Question: a . What is a molecular clock and what is it used for? b . If a length of DNA found in two species differed

a. What is a molecular clock and what is it used for?
b. If a length of DNA found in two species differed by 2 bases and we know that this entire length of DNA changed at a rate of approximately one base per 25 million years. That means that the two DNA versions differ by how many years?
c. How long ago did the common ancestor live for the same two species?
a . What is a molecular clock and what is it used

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