5g. A mutation has occurred rendering the regulatory protein unable to recognize the operator sequence. What effect would this have on the expression of this operon? How would this impact the energetic demands on the cell? Justify your answer.

Q: Model 1: What conditions would need to be present in the cell in order to reverse the regulatory…

A: The operon is the system that explains the regulation of gene expression in terms of switching “on”…

Q: Consider a polycistronic operon consisting of genes B, C, and D (in that order) and with a single…

A: A polycistronic operon is a DNA segment that contains multiple genes that are transcribed into a…

Q: The lac operon consists of three structural genes, lacZ, lacY and lacA that are transcribed as a…

A: ii) LacP is called the promoter gene of lac operon.

Q: 2. please answer this asap

A: The research entails isolating mutations in both genes that encode the enzymes A and B, also as a…

Q: Which of the following is TRUE about attenuation?

A: In genetics, attenuation is a proposed mechanism of control in some bacterial operons which results…

Q: onsider a mutant of E. coli that has an inactivating mutation in the gene for the catabolite…

A: Catabolite activator protein (CAP) This protein senses the presence of glucose. It stimulates the…

Q: . Listed in parts a through g are some mutations that were found in the 5′ UTR of the trp operon of…

A: trp operon: it's found in E coli and it encodes for essential amino acid tryptophan. The trp DNA is…

Q: Explain the positive control of the lac operon A toxin was found to inhibit the production of CAMP…

A: Lac operon is the segment of DNA which includes cluster of genes for breaking down of lactose. The…

Q: In the presence of lactose and the presence of glucose the lac operon is V [ Select ] Lacl is […

A: An operon is essentially a gene regulatory system in which a collection of genes coding for…

Q: Considering the Lac operon in E. coli, and chose what the expression of Lac Y would be in:  I) E.…

A: Lac l is the gene  which synthesizes repressor.Actually repressor is a protein that binds to the…

Q: . Define operon and describe how operons affect how bacteria can regulate their gene expression.

A: In prokaryotes, one promoter is able to regulate multiple genes.

Q: Fill in the 2 blanks: The lac operon is an example of (blank 1)_______ control in which the presence…

A: An operon is a cluster of genes which is controlled by a single promoter. Lac operon, also known as…

Q: ttenuator control of the Trp operon   what is the correct option from the choices below? involves a…

A: The trp operon, found in E. coli bacteria, is a group of genes that encode biosynthetic enzymes for…

Q: What is the function of CTAB being added to the cell culture before performing the enzyme induction…

A: Cell culture is the propagation of cells by providing a controlled physiological and physicochemical…

Q: The arabinose operon How does the araC protein regulate of the arabinose operon. How does its…

A: How arac protein regulate arabinose operon and how binding differ  If arabinose is absent, the dimer…

Q: 1. The B-galactosidase gene of the lac operon is expressed at high level when which combination of…

A: High lactose concentration induces the production of the B-galactosidase enzyme. Lactose acts as an…

Q: Translation initiation sequences can cause different open reading frames to be translated…

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

Q: The antagonist of the inhibitor in down regulation is called: A. repressor B. promoter C. inducer D.…

A: The antagonist of inhibitor in down regulation is inducer.

Q: 1d regulation of the lack operon by the lack repressor is an example of negative regulation. what in…

A: E.coli  bacterium intake glucose as a primary source of energy metabolism . When a glucose is scarce…

Q: Pls help ASAP. Use the info to ans the q.

A: Based on the information provided, the correct option would be::- the lac operator (lacO).The lac…

Q: None

A: The provided diagram represents an mRNA molecule transcribed from an operon, a typical feature in…

Q: the regulation of the lactose operon in Escherichia coli, by measuring expression of the lacZ gene…

A: lactose operon is a set of gene  require for the transportation and metabolism of lactose and is…

Q: 2. Assume you have identified a new operon in bacteria (which you call the suc operon) that encodes…

A: The gene expression in prokaryotes is under the control of operon system in which the transcription…

Q: Choose the best options, by dragging and dropping the colour coded text boxes below, that fill in…

A: Operon is transcription unit of prokaryotic genome with consist of many contiguous structural genes…

Q: ferR ferP. ferS ferI ferZ KEY: O = operator P = promoter Boxes = structural genes Arrows =…

A: An operon is the unit of bacterial gene expression and regulation. The operon contains the…

Q: Introducing the recombinant lac operon/mouse tyrosinase DNA into mice is only half of the equation…

A: Regulating tyrosinase is a significant aspect in various biological processes, especially those…

Q: Think about components/interactions of lac operon during conditions of: - glucose, + lactose…

A: In the presence of easily metabolisable sugars like glucose, the bacteria first utilizes the simple…

Q: When a structural gene is under positive inducible control, what would be the result of a mutation…

A: An operon is a set of genes whose  functions are related to each other and are clustered together…

Q: 2. (A) Describe the role that PI plays in transcriptional regulation of the ginALG operon and in the…

A: A.glnALG operon along with the glnD and glnF and their gene products plays an extremely important…

Q: 4b. Briefly describe the changes in gene expression that happen in the lac operon when lactose is…

A: An operon is a unit of bacterial gene expression and regulation, Which includes structural genes and…

Q: You now add tryptophan to the cell. What would happen to the bacterial cell and its trp operon?

A: Gene regulation is the process in which the DNA which contains information is transcribed into the…

Q: -Discuss how the presence of glucose impacts the expression of the ara operon.

A: Introduction: The L-arabinose operon, which is called the ara or araBAD operon, for the breakdown of…

Q: You mutated the gene encoding the cyclic AMP receptor protein (CRP). In this mutant, the CRP is…

A: Operon is a gene regulatory structure that contains clusters of genes and these clusters of genes…

Q: For each of the following mutations in the lac operon, type a C if expression of lacZ would be…

A: The lac operon is a genetic system in bacteria that regulates the expression of genes involved in…

Q: 2. The promoter (P) is the start site of transcription through the binding of RNA polymerase before…

A: The lac operon: The lac operon or the lactose operon is the most widely studied gene with respect to…

Q: (iii) Mark all sentences as true or false. (A) RNA polymerase binds to the operator sequence of the…

A: RNA polymerase is defined as the enzyme that catalyzes the transcription of DNA into RNA. It is a…

Q: Lạc Y [ Choose ] operator [ Choose ] Lạc Z [ Choose ] operon [ Choose ] trans-acting [ Choose ]…

A: Introduction:- Lactose metabolism genes are found in the lac operon of E. coli. It is only expressed…

Q: . Why is a nonsense suppressor tRNATyr, even though ithas a mutant anticodon that cannot recognize a…

A: The aminoacyl-tRNA synthetases have recognition sites for amino acids, ATP (Adenosine triphosphate),…

Q: True/false? if false, justify briefly Bacterial operons gather open-reading-frames that are coupled…

A: An operon is a group of few genes that are regulated under the same promoter and operator region.…

Q: . Explain how the actions of the lac operon are different from the trp operon.

A: An operon is a cluster of genes that are transcribed together to give a single messenger RNA (mRNA)…

Q: regulation of the lac operon by cAMP-CAP complex is an example of positive regulation. what in…

A: They are transcription, translation, post-transcription and post-translation. Genes which code for…

Q: Consider a mutant of E. coli that has an inactivating mutation in the gene for adenylate cyclase…

A: Introduction The lactose operon (also known as the lac operon) is a group of genes present in E.…

Q: Lac operon explain in easy words

A: An operon is a genetic regulatory system that clusters genes coding for functionally related…

Q: For each of the following mutations in the lac operon, type a C if expression of lacz would be…

A: The lac operon is a group of genes in bacteria that regulate lactose breakdown and utilization. It…

Q: Match the term with its description. cAMP     Allows lactose to enter the cell and product of the…

A: Cyclic Adenosine monophosphate is a second messenger which is necessary for various biological…

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.