Which of the Following Best Represents the Order of Gene $\times$

Multiple Choice

Which of the following best represents the order of gene transfer in an Hfr $\times$ F^- mating?

A) All plasmid genes followed by some or all of the chromosome.
B) Part of the plasmid followed by the chromosome followed by the rest of the plasmid.
C) The chromosome followed by the plasmid.
D) Part of the chromosome followed by the plasmid followed by the rest of the chromosome.