bacterial chromosomes

What Is An HFR Strain?

by

What Is An HFR Strain? Definition. A strain of bacterial that possesses the F factor Why are Hfr strains important? By using Hfr and F− strains with one strain carrying mutations in several genes, each affecting a metabolic function or causing antibiotic resistance, and examining the phenotype of the recipient cells on selective agar plates,

What Would Be The Result If A HFR Cell Conjugation With An F Cell?

by

What Would Be The Result If A HFR Cell Conjugation With An F Cell? coli DNA (more…) Now, during conjugation between an Hfr cell and a F− cell a part of the chromosome is transferred with F. Random breakage interrupts the transfer before the entire chromosome is transferred. The chromosomal fragment can then recombine with