Which Value(s) Would Be Required to Calculate How Long Ago

question 39

Multiple Choice

Which value(s) would be required to calculate how long ago the most recent ancestor of ungulates lived?
I. the number of base pairs that differ among species in a certain genetic sequence
II. the total number of base pairs in the genetic sequence examined
III. the age of a fossil ancestor for calibration

• A) I
• B) II
• C) III
• D) I, II, and III

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