One way that regulation is often studied is by examining the effects of mute ons. For example, mutations within the parts of the lac operon have been well studied. Which of these mutants would be considered a constitutive mutant (the operon is always on)? a mutation in CAP that prevents the binding of CAMP a mutation in one of the structural genes that prevents the transport of lactose into the cell a mutation that disables the promoter for the operon a mutation that disables the repressor
One way that regulation is often studied is by examining the effects of mute ons. For example, mutations within the parts of the lac operon have been well studied. Which of these mutants would be considered a constitutive mutant (the operon is always on)? a mutation in CAP that prevents the binding of CAMP a mutation in one of the structural genes that prevents the transport of lactose into the cell a mutation that disables the promoter for the operon a mutation that disables the repressor
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
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Gene Interactions
When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.
Gene Expression
Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.
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Transcribed Image Text:**Understanding the Effects of Mutations in Gene Regulation**
One common method to study regulation is by examining the effects of mutations. In particular, mutations within the parts of the *lac* operon have been extensively researched. Consider the following scenario to determine which of these mutations would be classified as a constitutive mutant, meaning the operon is always active:
- ○ A mutation in CAP that prevents the binding of cAMP.
- ○ A mutation in one of the structural genes that prevents the transport of lactose into the cell.
- ○ A mutation that disables the promoter for the operon.
- ○ A mutation that disables the repressor.
In genetic studies, understanding mutations and their consequences plays a crucial role in comprehending gene regulation and expression.
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