Multiple Choice
What does the following phylogeny suggest?
A) The bilaterian ancestor likely had a nervous system arranged like cnidarians.
B) The bilaterian ancestor may have had a diffuse net of nerves.
C) The evolution of a single nerve cord occurred in the common ancestor of all animals.
D) a and b
E) a, b, and c
Correct Answer:

Verified
Correct Answer:
Verified
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