The Extant Group Likely to Be the Most Closely Related

The extant group likely to be the most closely related to the basal chordates are the echinoderms because

A) there is direct fossil evidence for a lineage from sea stars to tunicates.
B) tunicates are advanced echinoderms.
C) early embryonic development of echinoderms is similar to that of chordates.
D) although there are few similarities between echinoderms and chordates,there are even fewer between chordates and any other group.
E) new molecular evidence shows they are nearly identical at the rRNA level.

Correct Answer:

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