A virus carries a piece of bacteria DNA from one bacterium to another in a process called

A) transformation.
B) transduction.
C) conjugation.
D) infection.
E) replication.

In transduction, a virus (bacteriophage) transfers genetic material from one bacterium to another. This can occur when a virus accidentally packages a piece of bacterial DNA instead of its own DNA, and then transfers it to another bacterium upon infection. Transformation (A) is the uptake of free DNA by a bacterium from its environment, while conjugation (C) is the transfer of DNA between bacteria through direct contact. Infection (D) and replication (E) are broad terms that can refer to any number of biological processes.