Question

Consider the diagram that depicts the lysogenic and lytic cycles.

The steps of the lysogenic cycle are shown. In Step A, attachment and entry occurs. In step B, the provirus is formed. In step C, the cell begins to divide. In step D, the provirus leaves. In step E, the virus is replicated and assembled. In step F, lysis and release of the virus occurs.

In which step of the diagram is the provirus formed?
step A
step B
step E
step F

Answer 1

Step B — the provirus is formed when the viral DNA integrates into the host genome during the lysogenic cycle.