Question

In Hfr X f- matings, f- almost never acquires Hfr phenotype.

A. True
B. False

Answer 1

In Hfr X f- matings, f- almost never acquires the Hfr phenotype. True.

Step-by-step explanation:

In Hfr X f- matings, f- almost never acquires the Hfr phenotype.

This statement is True. In Hfr (high frequency of recombination) X f- matings, the Hfr strain transfers its genetic material to the f- recipient strain, but f- rarely acquires the Hfr phenotype. The Hfr phenotype is characterized by the ability to transfer the entire F plasmid to the recipient, converting it into an Hfr cell.

This is because the F plasmid in the Hfr strain is integrated into the bacterial chromosome, and it takes a significant amount of time for the entire chromosome to be transferred. As a result, the f- recipient usually does not acquire the Hfr phenotype.