Question

A molecule that can be used as a molecular clock has a neutral mutation rate of one mutation per 5 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 eight mutations?

1.5 million years

10 million years

40 million years

20 million years

Answer 1

1.5 million years

Answer 2

ok

Answer 3

it was wrng

Answer 4

40 was to i think its 20

Answer 5

20 million years

Answer 6

i searched the net now