| Conjugating | Cell types present after conjugation |
|---|---|
| F+ × F− | Two F+ cells (F− cell becomes F+) |
| Hfr × F− | One Hfr cell and one F− (no change)* |
| F′ × F− | Two F′ cells (F− cell becomes F′) |
|
* Rarely, the F− cell becomes F+ in an Hfr × F− conjugation if the entire chromosome is transferred during conjugation. |
|