The glycerol operon has two structural genes that encode the enzymes Amairmerasa and isomerase, as well as two regulator genes. mutants glycerol present glycerol absent genotype epimerase isomerase active epimerase Isomerase active active active mutant 2 yes no no a+ b+ c- d+ mutant 3 yes no no no a+ b- c+ de mutant 4 a+ b+ c- d- no no no no mutant 5 no no a-b- c+ d+ no no mutant 3/mutant4 yes no no no mutant 2/mutant 5 yes yes no no 1. The epimerase is encoded for by which gene? 2. The isomerase is encoded for by which gene? 3. From the data in the table draw a model for the regulation of the genes of the glycerol operon. Include all the genes, their encoded products and their modes of action in the presence and absence of glycerol

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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The glycerol operon has two structural genes that encode the enzymes amairoerasa and isomerase, as well as two
regulator genes.
mutants
glycerol present
glycerol absent
genotype
epimerase Isomerase
epimerase
Isomerase
active
active
active
active
mutant 2
yes
a+ b+ c- d+
no
no
mutant 3
yes
no
no
no
a+ b- c+ d+
mutant 4
no
no
no
no
a+ b+ c- d-
mutant 5
no
no
no
no
a- b- c+ d+
mutant 3/mutant4
yes
no
no
no
mutant 2/mutant 5
yes
yes
no
no
1. The epimerase is encoded for by which gene?
2. The isomerase is encoded for by which gene?
3. From the data in the table draw a model for the regulation of the
genes of the glycerol operon. Include all the genes, their encoded
products and their modes of action in the presence and absence of
glycerol
Transcribed Image Text:The glycerol operon has two structural genes that encode the enzymes amairoerasa and isomerase, as well as two regulator genes. mutants glycerol present glycerol absent genotype epimerase Isomerase epimerase Isomerase active active active active mutant 2 yes a+ b+ c- d+ no no mutant 3 yes no no no a+ b- c+ d+ mutant 4 no no no no a+ b+ c- d- mutant 5 no no no no a- b- c+ d+ mutant 3/mutant4 yes no no no mutant 2/mutant 5 yes yes no no 1. The epimerase is encoded for by which gene? 2. The isomerase is encoded for by which gene? 3. From the data in the table draw a model for the regulation of the genes of the glycerol operon. Include all the genes, their encoded products and their modes of action in the presence and absence of glycerol
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