Which of the following pieces of evidence most strongly supports the common origin of all life on Earth?
A)All organisms require energy.
B)All organisms use essentially the same genetic code.
C)All organisms reproduce.
D)All organisms show heritable variation.

Question

Quizplus · Accepted Answer

The fact that all organisms use essentially the same genetic code strongly suggests a common origin for all life on Earth. This universal genetic code is highly conserved and suggests that all living organisms descended from a common ancestor that used this same genetic code.

Which of the Following Pieces of Evidence Most Strongly Supports