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Probelm set 2-UNEX Spring 2013

What possible changes in the luxr protein might have

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Unformatted text preview: changes in the LuxR protein might have caused this phenotype? (5pt) Q3. Five Hfr strains A through E are derived from a single F+ strain of E. coli. The following chart shows the entry times (in parenthesis) of the first five markers into an F-­‐ strain when each is used in an interrupted-­‐conjugation experiment. A B C D E mal+ (1) ade+ (13) pro+ (3) pro+ (10) his+(7) strr (11) his+ (28) met+ (29) gal+ (16) gal+ (17) ser+ (16) gal+ (38) xyl+ (32) his+ (26) pro+ (23) ade+ (36) pro+ (44) mal+ (37) ade+ (41) met+ (49) his+ (51) met+ (70) strr (47) ser+ (61) xyl+ (52) a) Draw a map of the F+ strain, indicating the positions of all genes and their distances apart in minutes. (5pts) b) Show the insertion point and orientation of the F plasmid in each Hfr strai...
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