23. The mmm operon, which has sequences A, B, C, and D (which may be structural genes or regulatory sequences), encodes enzymes 1 and 2. Mutations in sequences A, B, C, and D have the following effects, where a plus sign (+) indicates that the enzyme is synthesized and a minus sign (-) indicates that the enzyme is not synthesized. mmm absent mmm pi Mutation in Enzyme Enzyme Enzyme E 2 sequence No mutation A B a. Is the mmm operon inducible or repressible? b. Indicate which sequence (A, B, C, or D) is part of the following components of the operon: Regulator gene Promoter Structural gene for enzyme 1. Structural gene for enzyme 2 + I1 + II
23. The mmm operon, which has sequences A, B, C, and D (which may be structural genes or regulatory sequences), encodes enzymes 1 and 2. Mutations in sequences A, B, C, and D have the following effects, where a plus sign (+) indicates that the enzyme is synthesized and a minus sign (-) indicates that the enzyme is not synthesized. mmm absent mmm pi Mutation in Enzyme Enzyme Enzyme E 2 sequence No mutation A B a. Is the mmm operon inducible or repressible? b. Indicate which sequence (A, B, C, or D) is part of the following components of the operon: Regulator gene Promoter Structural gene for enzyme 1. Structural gene for enzyme 2 + I1 + II
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter16: Regulation Of Gene Expression
Section: Chapter Questions
Problem 2TYK: For the E. coli lac operon, when lactose is present: a. and glucose is absent, cAMP binds and...
Related questions
Question
![23. The mmm operon, which has sequences A, B, C, and D (which may be
structural genes or regulatory sequences), encodes enzymes 1 and 2.
Mutations in sequences A, B, C, and D have the following effects, where
a plus sign (+) indicates that the enzyme is synthesized and a minus sign
(-) indicates that the enzyme is not synthesized.
mmm absent mmm pi
Mutation in Enzyme Enzyme Enzyme E
2
sequence
No mutation
A
B
a. Is the mmm operon inducible or repressible?
b. Indicate which sequence (A, B, C, or D) is part of the following
components of the operon:
Regulator gene
Promoter
Structural gene for enzyme 1.
Structural gene for enzyme 2
+ I1
+ II](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F027ec327-c2ce-4fe8-b7f5-2126e022415b%2Feed6157f-e79e-4f0c-9b39-18efdbe41bf7%2Frsneyco.jpeg&w=3840&q=75)
Transcribed Image Text:23. The mmm operon, which has sequences A, B, C, and D (which may be
structural genes or regulatory sequences), encodes enzymes 1 and 2.
Mutations in sequences A, B, C, and D have the following effects, where
a plus sign (+) indicates that the enzyme is synthesized and a minus sign
(-) indicates that the enzyme is not synthesized.
mmm absent mmm pi
Mutation in Enzyme Enzyme Enzyme E
2
sequence
No mutation
A
B
a. Is the mmm operon inducible or repressible?
b. Indicate which sequence (A, B, C, or D) is part of the following
components of the operon:
Regulator gene
Promoter
Structural gene for enzyme 1.
Structural gene for enzyme 2
+ I1
+ II
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Recommended textbooks for you
![Biology: The Dynamic Science (MindTap Course List)](https://www.bartleby.com/isbn_cover_images/9781305389892/9781305389892_smallCoverImage.gif)
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:
9781305389892
Author:
Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:
Cengage Learning
![Biology 2e](https://www.bartleby.com/isbn_cover_images/9781947172517/9781947172517_coverImage_Textbooks.gif)
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
![Biology: The Unity and Diversity of Life (MindTap…](https://www.bartleby.com/isbn_cover_images/9781305073951/9781305073951_smallCoverImage.gif)
Biology: The Unity and Diversity of Life (MindTap…
Biology
ISBN:
9781305073951
Author:
Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:
Cengage Learning
![Biology: The Dynamic Science (MindTap Course List)](https://www.bartleby.com/isbn_cover_images/9781305389892/9781305389892_smallCoverImage.gif)
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:
9781305389892
Author:
Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:
Cengage Learning
![Biology 2e](https://www.bartleby.com/isbn_cover_images/9781947172517/9781947172517_coverImage_Textbooks.gif)
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
![Biology: The Unity and Diversity of Life (MindTap…](https://www.bartleby.com/isbn_cover_images/9781305073951/9781305073951_smallCoverImage.gif)
Biology: The Unity and Diversity of Life (MindTap…
Biology
ISBN:
9781305073951
Author:
Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:
Cengage Learning