A lysogen is
A) a bacteriophage that carries bacterial DNA integrated into its genome.
B) an insect that carries virus DNA in its genome.
C) a temperate phage that can insert its DNA into the host's DNA.
D) a bacterium that carries phage DNA (a prophage) integrated into its genome.
E) a bacteriophage that lyses its host as a result of its replication cycle.

Question

A lysogen is
A) a bacteriophage that carries bacterial DNA integrated into its genome.
B) an insect that carries virus DNA in its genome.
C) a temperate phage that can insert its DNA into the host's DNA.
D) a bacterium that carries phage DNA (a prophage) integrated into its genome.
E) a bacteriophage that lyses its host as a result of its replication cycle.

Quizplus · Accepted Answer

A lysogen is a bacterium that carries phage DNA (a prophage) integrated into its genome. This occurs when a temperate phage infects a bacterial cell and integrates its DNA into the host's DNA, replicating along with it. The host bacterium is referred to as a lysogen because it is not immediately lysed by the phage as in a lytic cycle.

A Lysogen Is