Choanoflagellates Have Been Important for the Study of Cell Communication

Choanoflagellates have been important for the study of cell communication evolution because choanoflagellates have:

A) protein kinases similar to those in animals.
B) G proteins different from those in prokaryotes.
C) signaling molecules similar to those of other protists.
D) signal transduction pathways unlike those in other bacteria.
E) signal transduction pathways that interfere with the cells they infect.