Why does conjugation with an Hfr donor result in a much higher rate of gene transfer than conjugation with an F⁺ donor?
A)An F⁺ donor makes fewer pili.
B)An F⁺ donor's T strand is slow to reach the pilus.
C)The Hfr donor transfers genes from the chromosome and not the plasmid.
D)The Hfr donor segment must undergo recombination in the recipient.
E)The F⁺ donor segment must undergo recombination in the recipient.

Question

Quizplus · Accepted Answer

Hfr donors transfer genes from their chromosomal DNA, which is much larger than the F⁺ plasmid DNA. This means that there are many more genes available for transfer in an Hfr conjugation compared to F⁺ conjugation. Additionally, the Hfr conjugation usually does not complete the transfer of the entire chromosome due to the limited time of conjugation, so only a portion of the donor chromosome may be transferred to the recipient.

Why Does Conjugation with an Hfr Donor Result in a Much