Which Species Might Be Able to Include Hfr Cells

Question

Which species might be able to include Hfr cells?
A)species A
B)species B
C)species C
D)species D
E)species E

Accepted Answer

Hfr cells are bacterial cells that have integrated their F factor (a plasmid that contains the genes required for conjugation) into the bacterial chromosome. This means that during conjugation, the entire bacterial chromosome can be transferred to the recipient cell along with the F factor. Based on the given information, only species D is a bacterial species, so it is the only species that might be able to include Hfr cells.