Recall That Cyanobacteria May Have Developed as a Result of Transfer

Multiple Choice

Recall that cyanobacteria may have developed as a result of transfer of genetic material: a bacterium carrying the genetic information for one photosystem received (from another bacterium) the genetic information for a second, distinct photosystem. What might be possible mechanisms of action for genetic transfer?

A) Bacteria could take up genetic information (released from dead bacteria) from their surroundings.
B) Bacteria may exchange genetic information through the development of cytoplasmic connections.
C) Bacteria may become infected by a virus that carries genetic information taken from previously infected bacteria.
D) All of these choices are correct.