An Hfr strain is produced when
A) an F episome integrates into the E. coli chromosome.
B) an F episome leaves the E. coli chromosome.
C) an F episome is transferred to a new cell.
D) an F episome leaves the host chromosome and removes some of the host chromosome.

Question

Quizplus · Accepted Answer

An Hfr (high frequency of recombination) strain is produced when the F plasmid integrates into the bacterial chromosome, resulting in the transfer of chromosomal genes along with the F plasmid during conjugation.

An Hfr Strain Is Produced When