during what process do prokaryotes exchange genetic information

Question

anonymous · Answer

bacteria exchange their genetic material during bacterial conjugation

anonymous · Answer

we can use the term horizontal gene transfer (in the case of prokaryotes it is mainly by methods like transformation, transduction, conjugation and through gene transfer agents) here.
 #Anyway none of these are actually 'exchange' because in most cases materials are passing from one (donor) to another (recipient) but nothing in return happening (for the donor). 

# is my view only. Some of the text books also using the term exchange while describing these things. Anyone having more ideas about this please share

anonymous · Answer

conjugation is the answer.