Which value(s)would be required to calculate how long ago the most recent ancestor of ungulates lived?

Question

Quizplus · Accepted Answer

All of the values are required to calculate how long ago the most recent ancestor of ungulates lived. The number of base pairs that differ among species in a certain genetic sequence can be used to estimate the amount of time since the species diverged from a common ancestor. The total number of base pairs in the genetic sequence examined can be used to estimate the rate of mutation in the sequence. The age of a fossil ancestor for calibration can be used to provide a fixed point in time against which the estimated divergence times can be calibrated.

Which Value(s)would Be Required to Calculate How Long Ago the Most