The pattern of gene transfer from Hfr to F- cells ____
a. occurs with genes furthest from the F factor being transferred first
b. can be used to map chromosomal genes in the F- cell
c. was used to map the E. coli chromosome
d. cannot be used to indicate the relative positions of genes within the Hfr cell
e. is random because the F factor moves between different positions in the chromosome
ANSWER: c
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