Question

imagine 2 species share 65% of their genome. assuming a substitution rate of 5% per million years, how many years have passed since these species diverged from one another?

Answer 1

7 million years.

Step-by-step explanation:

If 2 species share 65% of their genome, then they differ by 35%. If the substitution rate is 5% per million years, then it would take 7 million years for that 35% difference to accumulate. So, these species likely diverged about 7 million years ago.