For the following questions, describe the expression levels of the structural genes in the Trp operon under the conditions described. In the absence of tryptophan, the structural genes will: [ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"] In the presence of tryptophan, the structural genes will: [ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"] In the absence of tryptophan and the promoter sequence was mutated such that the RNA polymerase can no longer bind, the structural genes will: [ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"] In the presence of tryptophan and the promoter sequence was mutated such that the RNA polymerase can no longer bind, the structural genes will: [ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"] In the absence of tryptophan and the trpR repressor gene is mutated such that the repressor protein product can no longer bind to the operator, the structural genes will: [ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"] In the presence of tryptophan and the trpR repressor gene is mutated such that the repressor protein product can no longer bind to the operator, the structural genes will: [ Select ] ["No longer be expressed", "Be constantly expressed", "Be constantly expressed"] In the absence of tryptophan and the promoter sequence was mutated such that the RNA polymerase can no longer bind, the structural genes will: [ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"] In the presence of tryptophan and the promoter sequence was mutated such that the RNA polymerase can no longer bind, the structural genes will: [ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"] In the absence of tryptophan and the trpD structural gene contains a frameshift insertion mutation, the structural genes will: [ Select ] ["No longer be expressed", "Be constantly expressed but the protein will be truncated and possibly non-functional", "Be constantly expressed but the protein will be longer and possibly non-functional"] In the presence of tryptophan and the trpD structural gene contains a frameshift insertion mutation, the structural genes will: [ Select ] ["No longer be expressed", "Be constantly expressed but the protein will be truncated and possibly non-functional", "Be constantly expressed but the protein will be longer and possibly non-functional"]

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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For the following questions, describe the expression levels of the structural genes in the Trp operon under the conditions described.

In the absence of tryptophan, the structural genes will:
[ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"]

In the presence of tryptophan, the structural genes will:
[ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"]

In the absence of tryptophan and the promoter sequence was mutated such that the RNA polymerase can no longer bind, the structural genes will:
[ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"]

In the presence of tryptophan and the promoter sequence was mutated such that the RNA polymerase can no longer bind, the structural genes will:
[ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"]

In the absence of tryptophan and the trpR repressor gene is mutated such that the repressor protein product can no longer bind to the operator, the structural genes will:
[ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"]

In the presence of tryptophan and the trpR repressor gene is mutated such that the repressor protein product can no longer bind to the operator, the structural genes will:
[ Select ] ["No longer be expressed", "Be constantly expressed", "Be constantly expressed"]

In the absence of tryptophan and the promoter sequence was mutated such that the RNA polymerase can no longer bind, the structural genes will:
[ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"]

In the presence of tryptophan and the promoter sequence was mutated such that the RNA polymerase can no longer bind, the structural genes will:
[ Select ] ["No longer be expressed", "Be constantly expressed", "Be deleted from the operon"]

In the absence of tryptophan and the trpD structural gene contains a frameshift insertion mutation, the structural genes will:
[ Select ] ["No longer be expressed", "Be constantly expressed but the protein will be truncated and possibly non-functional", "Be constantly expressed but the protein will be longer and possibly non-functional"]

In the presence of tryptophan and the trpD structural gene contains a frameshift insertion mutation, the structural genes will:
[ Select ] ["No longer be expressed", "Be constantly expressed but the protein will be truncated and possibly non-functional", "Be constantly expressed but the protein will be longer and possibly non-functional"]

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