How Do Different Strains of E

Multiple Choice

How do different strains of E.coli can reveal different linkage arrangements of genes in Hfr crosses?

A) They do not.All Hfr strains are identical.
B) Different strains may have different F factors and therefore different initiation points for chromosome transfer.
C) Hfr strains will demonstrate different areas of recombination,due to dominance and recessiveness of genes.
D) In different Hfr strains,different genes will be transferred based on where the centromere resides.
E) In different Hfr strains,genes can be in different order on the chromosome.