A.  Draw a map of the F+strain, indicating the positions of all genes and their distances apart in minutes

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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A.  Draw a map of the F+strain, indicating the positions of all genes and their distances apart in minutes.

B.  Show the insertion point and orientation of the F plasmid in each Hfr strain on the map you have drawn for part A.

C.  In the use of each of these Hfr strains, state which gene would you select to obtain the highest proportion of Hfr exconjugants?

answers.yahoo.com
Five Hfr strains A through E are derived from a single F* strain of E. coli. The following
chart shows the entry of the first five markers into an F strain, when each is used in an
interrupted-conjugation experiment.
mal (1)
ade (13)
pro*(3)
pro*(10)
his (7)
str (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)
str (47)
ser' (61)
xyl'(52)
C.
Transcribed Image Text:answers.yahoo.com Five Hfr strains A through E are derived from a single F* strain of E. coli. The following chart shows the entry of the first five markers into an F strain, when each is used in an interrupted-conjugation experiment. mal (1) ade (13) pro*(3) pro*(10) his (7) str (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) str (47) ser' (61) xyl'(52) C.
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