A bacterial strain contains a subgroup of a species with so

: A bacterial strain contains

a subgroup of a species with some of the same characteristics

several species

several families of bacteria

a strain is the prokaryotic version of a species

a subgroup of a genus which have permanent genetic differences

Solution

The answer is: a subgroup of a species with some of the same characteristics

A bacterial strain contains a subgroup of a species with some of the same characteristics.