Question

A molecule that can be used as a molecular clock has a neutral mutation rate of one mutation per 20 million years. How many years ago did two species share a common ancestor if the molecules found in these two species differ by a total of six mutations?

60 million years

120 million years

100 million years

30 million years

Answer 1

I will medal and fan help!

Answer 2

Not completely sure but based on common sense:
1 mutation per 20 million years
6 mutations in 20*6 million years = 120 million years

Answer 3

so the answer wuld be B? @BioEpic

Answer 4

yes most likely