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In E. coli, the genes for histidine (his), arginine (arg), tyrosine (tyr), and valine (val) synthesis are closely linked. A wild-type strain is used as a donor for transducing viruses. Various recipient strains were treated with these viruses. Wild-type recombinant colonies were then counted, with the results shown in the following table. Genotype of recipient his- arg+ val+ tyr+ his+ arg+ val- tyr- his- arg- val+ tyr+ his- arg+ val+ tyr- Number of wild- type colonies 254 36 28 100 Genotype of recipient his+ arg- val- tyr+ his+ arg- val+ tyr+ his- arg+ val- tyr+ his+ arg- val+ tyr- Number of wild- type colonies 132 240 102 2

In E. coli, the genes for histidine (his), arginine (arg), tyrosine (tyr), and valine (val) synthesis are closely linked. A wild-type strain is used as a donor for transducing viruses. Various recipient strains were treated with these viruses. Wild-type recombinant colonies were then counted, with the results shown in the following table. Genotype of recipient his- arg+ val+ tyr+ his+ arg+ val- tyr- his- arg- val+ tyr+ his- arg+ val+ tyr- Number of wild- type colonies 254 36 28 100 Genotype of recipient his+ arg- val- tyr+ his+ arg- val+ tyr+ his- arg+ val- tyr+ his+ arg- val+ tyr- Number of wild- type colonies 132 240 102 2

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 *E. coli*, the genes for histidine (his), arginine (arg), tyrosine (tyr), and valine (val) synthesis are closely linked. A wild-type strain is used as a donor for transducing viruses. Various recipient strains were treated with these viruses. Wild-type recombinant colonies were then counted, with the results shown in the following table. | Genotype of recipient | Number of wild-type colonies | Genotype of recipient | Number of wild-type colonies | |-----------------------|------------------------------|-----------------------|------------------------------| | his- arg+ val+ tyr+ | 254 | his+ arg- val- tyr+ | 132 | | his+ arg- val- tyr- | 36 | his+ arg- val+ tyr+ | 240 | | his- arg- val- tyr+ | 28 | his- arg+ val- tyr+ | 102 | | his- arg+ val- tyr- | 100 | his+ arg- val+ tyr- | 2 | Question: Which two genes are outer two genes in the map? Options: - ○ his-arg - ○ arg-val - ○ arg-tyr - ○ val-tyr - ○ val-his
Transcribed Image Text:In *E. coli*, the genes for histidine (his), arginine (arg), tyrosine (tyr), and valine (val) synthesis are closely linked. A wild-type strain is used as a donor for transducing viruses. Various recipient strains were treated with these viruses. Wild-type recombinant colonies were then counted, with the results shown in the following table. | Genotype of recipient | Number of wild-type colonies | Genotype of recipient | Number of wild-type colonies | |-----------------------|------------------------------|-----------------------|------------------------------| | his- arg+ val+ tyr+ | 254 | his+ arg- val- tyr+ | 132 | | his+ arg- val- tyr- | 36 | his+ arg- val+ tyr+ | 240 | | his- arg- val- tyr+ | 28 | his- arg+ val- tyr+ | 102 | | his- arg+ val- tyr- | 100 | his+ arg- val+ tyr- | 2 | Question: Which two genes are outer two genes in the map? Options: - ○ his-arg - ○ arg-val - ○ arg-tyr - ○ val-tyr - ○ val-his
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