What is the evolutionary relationship among archaea,bacteria,and eukarya?
A) Since archaea are the most primitive,archaean ancestors gave rise to bacteria that in turn gave rise to eukaryotes.
B) All three domains are equally distant from the most primitive common ancestor,a protocell.
C) Archaea and eukarya share nucleic acid similarities,so eukarya split off from archaea.
D) Bacterial ancestors gave rise to both archaea and to eukaryotes as two separate side branches.
E) Archaea ancestors gave rise to both bacteria and to eukaryotes as two separate side branches.
Correct Answer:
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