Hfr Now high After F x F cross a recipient bacterium is Afte

Hfr Now high After F+ x F cross, a recipient bacterium is After HfrxF a recipient bacterium is The frequency of transfer is relatively The frequency of transfer is relatively

Solution

Answer:

A). After F⁺ x F^- cross, a recipient bacterium is F^-. The frequency of transfer is relatively low.

After Hfr x F^- cross, a recipient bacterium is F^-. The frequency of transfer is relatively high.

B).

F+ bacteria	F- bacteria	Hfr bacteria	F\' bacteria
Possess the F factor	Lack the F factor	The F factor is integrated into the bacterial chromosome	The F factor possess a piece of the bacterial chromosome