In regulations demonstrated by initiation of transcription, if lactose is abundant, lactose in this operon system is termed a. inducer b. coactivator C. corepressor d. operator

Q: Describe the main features of repressible operons.

A: An operon is defined as a particular set of genes present on a DNA that operates under same…

Q: The only way that information is extracted out of DNA is through the transcription of MRNAS that…

A: According to our guideline we can answer only the first question. So upload the second question…

Q: Explain, with diagrams, how transcriptionattenuation works in the trp operon.

A: Atteunation is a mechanism of control in some bacterial operons which results in premature…

Q: Compare and contrast the roles of a corepressor and an inducer innegative regulation of an operon.

A: Gene regulation is the process through which the cells control the expression of genes. It controls…

Q: Explain why large amounts of transcript result when a bacterium with a lac Operon is in a medium…

A: Transcription is the process by which RNA is synthesized from DNA. The messenger RNA or mRNA…

Q: Explain how the lac operon exerts positive regulation.

A: operons are gene regulatory elements found in prokaryotes . these are set of genes which are…

Q: Mutations in bacterial promoters may increase or decrease the rate of gene transcription. Promoter…

A: Introduction Promoter are the consensus sequences found either upstream or partially downstream of…

Q: A mutation at the operator prevents the regulator protein from binding. What effect will this…

A: An operon includes a group of genes that have a common promoter, regulator, and would be transcribes…

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

A: The lac operon is a negatively inducible operon.

Q: a mutation that leads to a nonfunctional adenylate cyclase enzyme would lead to what expression…

A: A mutation is a change in the genetic material (the genome) of a cell of a live creature or a virus…

Q: Predict the effect on the activity of the lac operon of a mutation that disrupts the function of: a)…

A: The Catabolic Activator Protein (CAP) is a protein which acts as a positive regulating factor for…

Q: The highest level of transcription of the E. coli lac operon occurs when CAP (+cAMP) is bound to the…

A: The lac operon in E. coli is a system of genes that regulates the metabolism of lactose, a sugar.…

Q: In the lac operon, how would gene expression be affected if each one of the following segments was…

A: The lac operon is basically a group of genes with a single promoter whose genes encode proteins that…

Q: compare and contrast the regulation of the lac operon and the trp operon.

A: Prokaryotic organisms consists of two different types of operons that are important in the…

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: operon

A: Answer: Operon: In genetics, an operon is a functioning unit of DNA containing a cluster of genes…

Q: 5f. Complete the diagrams below to reflect the proteins and any relevant cofactors (e.g. -…

A: The lac operon is an operon, or cluster of genes with one promoter (transcribed as one mRNA). The…

Q: A bacterial cell has very low glucose and lactose is present.  Explain how the lac operon will…

A: Lac Operon -- An operon is a functioning unit of genomic DNA which contains a group of genes…

Q: Explain how the following conditions will affect the regulation of the operon. Low cAMP levels; E.…

A: Operon is a sequence of DNA that consists of a set of genes which are involved in a particular…

Q: Which enzyme will be produced in a cell where a nonsense mutation is present in the lac operon?

A: In genetics, the mutation in which a sense codon that corresponds to one of the twenty amino acids…

Q: Explain the structure of Lac operon in bacteria.

A: Lactose is a beta-galactoside that E.coli use for energy and as a carbon source after it is broken…

Q: A mutation prevents the catabolite activator protein (CAP) from binding to the promoter in the lac…

A: Mutation means sudden changes occur in DNA sequences. The mutation occurs randomly. It also occurs…

Q: Explain the role of CAP and cAMP in the regulation of the lac-operon

A: Lac operon is the gene regulation system for lactose uptake and breakdown.

Q: Provide the SIGNIFICANT differences between the following

A: The process by which a cell regulates the conversion of DNA to RNA (transcription) and hence…

Q: he lac operon, determine whether genes will be expressed (on) or silenced (off) given the following:…

A: IN option A Lactose levels are high, glucose is low.---- Genes will be expressed(on).

Q: Illustrate the mechanism of the trp operon in E. coli.

A: The trp operon codes for the components required for tryptophan synthesis. An operon is a collection…

Q: Explore the differences between positive inducible, positive repressible, negative inducible, and…

A: Positive Inducible Regulation:- In positive inducible regulation, the binding of the regulatory…

Q: Describe the probable genetic defect that abolishes the sensitivity of the lac operon to the absence…

A: The major carbohydrate source for bacterium are Glucose and Lactose. Glucose is is first choice of…

Q: Explain how elements of the lac operon are exploited to regulate recombinant protein production in…

A: Introduction Three structural genes, as well as a promoter, a terminator, a regulator, and an…

Q: In how many different ways is the regulation of the Trp operon?

A: An Operon is a region in a DNA that is required for the regulation of gene expression in…

Q: consider the fec operon of Staphylococcus madeupiddis, which encodes an iron citrate uptake system.…

A:

Q: Provide the SIGNIFICANT differences between the following: 1. Operon Systems Inducer/Lac…

A: An operon is a cluster of functional genes which are regulated by the common operator. Operons…

Q: Describe the advantages and disadvantages for organisms that arrange genes in operons.

A: Operons are regions of DNA that contain clusters of related genes and are made up of promoter…

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.