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

40 million years

Answer 3

It tells you that there is 1 mutation every 5 million years. So after 5 million years, there is one mutation. After 10 million years, there are two mutations. So after 40 million years, there will be 8 mutations.

Answer 4

idk wat 2 choose now

Answer 5

lol well i explained .

Answer 6

It was right , Right ?