When the F factor episome integrates into the E colichromoso
When the F factor episome integrates into the E. colichromosome, the result is which of the following strains?
F\'
Hfr
F+
F-
F+/-
| F\' | ||
| Hfr | ||
| F+ | ||
| F- | ||
| F+/- | 
Solution
The ans is Hfr strain. Hfr strain is the bacteria with F-plasmid integrated into its chromosomal DNA. This integration is through homologus recombination.

