<span>The correct answer is horizontal gene transfer, transduction.</span>
Transduction (a type of horizontal gene transfer)is the process by which foreign DNA is introduced into a bacteria cell. When viruses infect bacterial cells, their DNA is integrated into a bacterial chromosome and thus harness the replicational, transcriptional, and translation machinery of the bacteria. As a result, bacteria cell makes numerous virions (viral particles).
Velocity is how fast the river is moving, the Volume is how much is in the river!