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.
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