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 his-arg arg-tyr val-tyr val-his arg-val 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 Based on the information from assignment question 1, which two genes are closest two genes in the map?
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 his-arg arg-tyr val-tyr val-his arg-val 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 Based on the information from assignment question 1, which two genes are closest two genes in the map?
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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Genetic Recombination
Recombination is crucial to this process because it allows genes to be reassorted into diverse combinations. Genetic recombination is the process of combining genetic components from two different origins into a single unit. In prokaryotes, genetic recombination takes place by the unilateral transfer of deoxyribonucleic acid. It includes transduction, transformation, and conjugation. The genetic exchange occurring between homologous deoxyribonucleic acid sequences (DNA) from two different sources is termed general recombination. For this to happen, an identical sequence of the two recombining molecules is required. The process of genetic exchange which occurs in eukaryotes during sexual reproduction such as meiosis is an example of this type of genetic recombination.
Microbial Genetics
Genes are the functional units of heredity. They transfer characteristic information from parents to the offspring.
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Second, Question 2
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
his- arg+ val+
tyr+
his+ arg+ val-
tyr-
his- arg- val+
tyr+
his- arg+
val+ tyr-
Number of wild-
type colonies
Ohis-arg
arg-tyr
val-tyr
val-his
arg-val
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
Based on the information from assignment question 1, which two genes are closest
two genes in the map?
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