The hypothesis that a common ancestor gave rise to all living organisms is strengthened by what observation?
A)Almost all cells in all living organisms use DNA to direct their structure, function, and behavior.
B)All living organisms use energy acquired directly from the environment or from other organisms.
C)All living organisms reproduce.
D)Each type of living organism adheres to the general principles of the biological hierarchy.

Question

Quizplus · Accepted Answer

The observation that almost all cells in all living organisms use DNA to direct their structure, function, and behavior is consistent with the hypothesis that all living organisms share a common ancestor. The presence of DNA in all cells suggests that this genetic material was present in the common ancestor and has been passed down to all living descendants.

The Hypothesis That a Common Ancestor Gave Rise to All