E) The regulatory protein that controls expression of the hexose operons is a transcriptional ACTIVTOR or REPRESSOR (circle one).

Q: The map of the lac operon is shown below. Consider the following examples that include both haploids…

A: Lac operon is the segment of DNA which includes regulatory gene, structural gene, promoter gene and…

Q: In the lac operon system, do the inducers act at the transcription or translation level? Explain why…

A: The lactose operon (lac operon) consists of a regulatory gene (i-gene) and three structural genes -…

Q: 1) The logic of the Lac operon was deciphered by using bacterial lac-operon mutants. Crucial to the…

A: Lac operon is a genetic unit in bacteria that helps in the metabolism of lactose in E.coli and lac…

Q: How are the following components in the trp operon system affected by a mutation in trpC?  (trp…

A: Regulatory proteins are proteins that provide regulatory activities in processes like transcription.…

Q: If an abnormal repressor protein could still bind allolactose but the binding of allolactose did not…

A: The Lac operon contains genes responsible for the transportation and breakdown of lactose. These…

Q: For each of the following transcription factors, explain how eukaryotic transcriptional initiation…

A: A transcription factor is a sequence specific DNA-binding factor and upon binding to the DNA…

Q: If an abnormal repressor protein could still bind allolactose but the binding of allolactose did not…

A: Operon acts as a single regulated unit having one or more structural genes, promoter gene, a…

Q: The process in which the two-dimensional structure of RNA from the L region of an operon can either…

A: The strategy of creating an RNA duplicate of a grouping is transcription. The transcript, known as…

Q: Which of the following statements is not true of both the LacI and TrpR repressor proteins?a) an…

A: The objective of the question is to identify the statement that is not true for both LacI and TrpR…

Q: Which of the following statements about the trp operon is false?

A: From above question the statement  If a mutation in region 2 prevents the formation of the 2 + 3…

Q: The trp operon in E. coli encodes enzymes essential for the biosynthesis of tryptophan. In the…

A: trp operon is a repressor operon found in E. coli bacteria, which consists of a group of genes that…

Q: Which of the following conditions is most likely to result in an increase rate of transcription of…

A: Lactose in bacteria is called beta-galactoside which is used as energy and as a carbon source.…

Q: Which of the following lac operon genotypes would allow for functional versions of all the…

A: lac operon: - Inducible system - Both positive and negative regulation. - Involved in lactose…

Q: A mutation in the repressor LacI causes it to lose the ability to bind its effector, allolactose.…

A: The question is asking about the effect of a mutation in the LacI repressor that causes it to lose…

Q: A bacterial cell is mutated and cannot create the repressor protein associated with the Lac operon.…

A: Lac operon is associated with uptake and metabolism of lactose. It has several components such as a…

Q: The Lac operon is a common example of prokaryotic control of gene expression. In what condition is…

A: Lac operon consists of structural genes such as lacZ, lacY, and lacA which are responsible for the…

Q: hich operons would be functional under these conditions?   What repressors would be made? (NOTE:…

A: Operon is a regulatory unit consisting of cluster of genes containing operator promoter and…

Q: e following genetic and cellular conditions.  You do not need to consider the role of CAP in your…

A: Upper operon -  Is is super repressor. Once it is present in the sequence, it can not be removed. If…

Q: Describe the main functional differences between the TRP and the Lac operons. Main functional…

A: TRP stands for tryptophan. It is an essential amino acid that must be obtained from the diet and is…

Q: Match each of the following mechanisms with how it can change the levels of gene products--whether…

A: Operons are DNA segments that include groups of associated genes. They consist of a promoter region,…

Q: 12) The top operon in E. coli is a group of genes that control the biosynthesis of tryptophan.…

A: Step 1: TRP operon in E. coli is a classical case of gene regulation in prokaryotes' It regulates…

Q: An E. coli cell acquires a mutation in the gene that encodes CAP. The mutation affects the…

A: The transcription is a process through which information in the DNA molecule is transcribed into…

Q: For the following types of transcriptional control, indicate whether the protein produced by the…

A: An inducible operon is one which is not transcribed. For transcription of the molecule, it requires…

Q: Mutation in the regulatory gene in the lac operon results in the formation of an inactive repressor.…

A: The lac operon is an operon, or group of genes with a single promoter.The genes in the operon encode…

Q: Expression of the operon ultimately results in the synthesis of the repressor (Q) and co-repressor…

A: A repressor is a protein that turns off the expression of one or more genes. The repressor protein…

Q: that

A: The trp operon found in E coli bacteria . It's a group of genes that encode biosynthetic enzymes.…

Q: Tryptophan (Trp) attenuation is an extra mechanism of regulation of trp operon when trp level is too…

A: Attenuation is a mechanism of control of the tryptophan (Trp) operon that occurs when the level of…

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.