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In an interrupted mating experiment, crosses of three different Hfr strains to an F- strain are carried out, and the following mapping data are obtained. Assume that it takes exactly 60 minutes to transfer an entire chromosome (i.e., the total map length is 60 minutes). Based on these data, what is the best interpretation of the gene order and map distances in the bacterial chromosome? Time of appearance of genes in F- cells Hfrl: Genes b+ c+ at d+ Time of transfer 1 14 15 30 45 Hfr2: Genes et f d+ at c+ Time of transfer 5 15 30 45 46 Hfr3: Genes c* at d+ f et Time of transfer 4 5 20 35 45 None of these is correct e is between f and b and is 6 minutes from b O b is between e and f and is 15 minutes from e a is between f and d and is 10 minutes from d d is between a and c and is 10 minutes from a

In an interrupted mating experiment, crosses of three different Hfr strains to an F- strain are carried out, and the following mapping data are obtained. Assume that it takes exactly 60 minutes to transfer an entire chromosome (i.e., the total map length is 60 minutes). Based on these data, what is the best interpretation of the gene order and map distances in the bacterial chromosome? Time of appearance of genes in F- cells Hfrl: Genes b+ c+ at d+ Time of transfer 1 14 15 30 45 Hfr2: Genes et f d+ at c+ Time of transfer 5 15 30 45 46 Hfr3: Genes c* at d+ f et Time of transfer 4 5 20 35 45 None of these is correct e is between f and b and is 6 minutes from b O b is between e and f and is 15 minutes from e a is between f and d and is 10 minutes from d d is between a and c and is 10 minutes from a

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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In an interrupted mating experiment, crosses of three different Hfr strains to an F- strain are carried out, and the following mapping data are obtained. Assume that it takes exactly 60 minutes to transfer an entire chromosome (i.e., the total map length is 60 minutes). Based on these data, what is the best interpretation of the gene order and map distances in the bacterial chromosome? Time of appearance of genes in F- cells Hfrl: Genes b* c+ a* d+ f* Time of transfer 1 14 15 30 45 Hfr2: Genes et f* d+ at c+ Time of transfer 5 15 30 45 46 Hfr3: Genes c+ at d+ f* et Time of transfer 4 5 20 35 45 None of these is correct e is betweenf and b and is 6 minutes from b b is between e and f and is 15 minutes from e a is betweenf and d and is 10 minutes from d d is between a and c and is 10 minutes from a
Transcribed Image Text:In an interrupted mating experiment, crosses of three different Hfr strains to an F- strain are carried out, and the following mapping data are obtained. Assume that it takes exactly 60 minutes to transfer an entire chromosome (i.e., the total map length is 60 minutes). Based on these data, what is the best interpretation of the gene order and map distances in the bacterial chromosome? Time of appearance of genes in F- cells Hfrl: Genes b* c+ a* d+ f* Time of transfer 1 14 15 30 45 Hfr2: Genes et f* d+ at c+ Time of transfer 5 15 30 45 46 Hfr3: Genes c+ at d+ f* et Time of transfer 4 5 20 35 45 None of these is correct e is betweenf and b and is 6 minutes from b b is between e and f and is 15 minutes from e a is betweenf and d and is 10 minutes from d d is between a and c and is 10 minutes from a
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