Use the Hfr map to answer this question. The map shows the E. coli chromosome an

Question

Use the Hfr map to answer this question. The map shows the E. coli chromosome and indicates known locations and orientations of integrated F plasmids in several Hfr strains by arrowheads inside the circle. The arrowhead indicates the orientation of oriT of F. The numbers along the inside of the circle indicate map distances, in minutes, of the E. coli chromosome. Which 3 loci will Hfr strain KL96 transfer first?

Select one:

a. his, uvrC, pabB

b. nalA, aroC, ptsI

c. uvrC, his, nalA

d. his, nalA, aroC

e. pabB, aroD, man

Assuming that efficient transfer of markers within 15' of the Hfr occurs, which Hfr strain will transfer the glyA locus the most efficiently?

Select all that apply:

A. KL98

B. KL16

C. AB313

D. PK191

E. KL14

Explanation / Answer

e. pabB, aroD, man because it reaches from 35-40 the first to KL96

D. PK191 will transfer the glyA locus because it is present next to glyA in the diagram

given below.

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