10. Modify the diagrams below to reflect the activation and repression of lac operon. Use arrows, lines, X's, etc. to illustrate control of gene expression. lactose a. Activation CAP lac I repressor allolactose CAMP с RNA Pol promoter operator +1 lac Z lac Y lac A DNA

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: Assuming that the level of glucose is low, a mutation in the repressor associated with the lac…

A: The lac operon stands for lactose operon. These are a set of genes that are found in E.coli and…

Q: What is the default state of the lac operon? a. LacI repressor is sitting on the operator sequence…

A: Lacl repressor is sitting on a operator sequence and blocks RNAP from transcribing lacZYA

Q: What type of operon is arabinose operon? Dose the repressor bond when arabinose is I present or…

A: Introduction  An operon is a functional segment of Dna that houses a collection of genes that are…

Q: Describe the regulation of the lac operon when lactose is present and glucose is absent

A: In 1961, F. Jacob and J. Monod proposed the operon model to explain the genetic basis of enzyme…

Q: the folid ing mutations would result in the highest level of lac operon transcription in the absence…

A: Lac operon is an operon required for the transport and metabolism of lactose in E. coli and many…

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

A: Lac operon has *3 structural genes- lacZ, lacY, lacA *promoter, *operator, *terminator, *regulator.

Q: When tryptophan levels in the cell are low   A the trp repressor will be bound and the operon…

A: DNA and RNA are nucleic acids present in the organisms. DNA is the deoxy ribose nucleic acid whereas…

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: Choose correct option and do explain plz.  1. The protein complex that helps RNA polymerase to…

A: a) SWI/SNF It is composed of various proteins and act as an ATP-dependent chromatin remodeling…

Q: Which is a structural gene? A. The gene that encodes ß-galactoside permease OB. Allolactose OC. The…

A: Operon is the gene regulatory mechanism in prokaryotes that regulates many genes that are involved…

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: 13. Choose/mark the correct word to complete the statement. Consider the regulation of CAMP and the…

A: Operon is the segment of DNA which contains regulatory gene, promoter gene, operator gene and…

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: . For each of the following growth conditions, whatproteins would be bound to lac operon DNA?…

A: An operon consists of many related genes that are regulated by a common operator. The multiple genes…

Q: Which data provide the strongest evidence that O1 is not the only operator site?

A: In the quest to understand the intricacies of gene regulation within the lac operon, the search for…

Q: Compare and contrast the functional mechanism of the Inducible - Lac operon  with the Repressible -…

A: Gene expression is a process in which the genetic instructions of genes are utilized to manage…

Q: lactose a. Activation CAP lac I repressor allolactose b. Repression CAP lac I repressor CAMP с CAMP…

A: Lac operon consists of the cluster of genes. The letters depicted in the lac operon below are as…

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: 5. There are four genes in the FAK operon. a. How many mRNAs are encoded by this operon? b. The FAK…

A: Question 5 Answer a) There is only one mRNA that codes for four genes in the FAK operon.…

Q: Explain how the lac operon is regulated when both glucose and lactose is present. Make sure you…

A: An operon is a unit of gene expression that is present in bacteria and it helps to regulate gene…

Q: 4. Predict the level of genetic activity of the lac operon as well as the status of the lac…

A: In lac operon, structural genes responsible for lactose metabolism are all under the control of a…

Q: 10. Modify the diagrams below to reflect the activation and repression of lac operon. Use arrows,…

A: Lac operon contains genes involved in metabolism. The genes are expressed only when lactose is…

Q: I. In the lac operon, repression occurs when there is no lactose present. II. In the absence of…

A: When lactose absent and glucose is present no transcription of lac operon happens. Becaise lac…

Q: 5. Use the table below to describe under what conditions the lac operator is turned on and off. Is…

A: The lac operon is a single-promoter operon that is necessary for the transport and metabolism of…

Q: I. CAP-CAMP complex binds to the operator locus blocking the RNA polymerase. II. In the presence of…

A: The lactose operon (also known as the lac operon) is a set of genes that are specific for uptake and…

Q: Which of the following mutations would result in the highest level of lac operon transcription in…

A:

Q: Lac operon regulation under allolactose functions under____________ control; trp operon regulation…

A: Operon is the segment of DNA which includes regulatory gene, promoter gene, operator gene and…

Q: The role of allolactose in the lac operon

A: Lac Operon:This is a classic example of a gene regulation system found in E. coli.The key…

Q: F’ lac I- O+ Z+/ lac I+ Oc Z- the genotype indicated would lead to what type of expression of…

A: Bacteria contain multicistronic arrangements for the expression of genes that are involved in a…

Q: 2. You are studying the regulation of the lactose operon in Escherichia coli, by measuring…

A: The lac operon is responsible for the entry and metabolism of lactose in E. coli as well as most…

Q: If tryptophan is presence in the culture media of E.coli then _________.  the promoter will be…

A: This question is based on tryptophan operon. The trp operon is an operon-a group of genes that is…

Q: An operon is a group of genes under the control of a single promoter. Match each type of operon with…

A: The Inducible operon - Under the  default conditions , the transcription is the  inhibited.it is…

Q: Outline the operon theory using the lac operon as anexample

A: Operon consists of genes placed in sequential order. Lac operon has following genes- Regulator gene…

Q: In the lac operon, regulation of gene expression by CAP-CAMP is a type of O a. positive repressible…

A: Lac operon can be defined as the set of  constitutive genes with a single promoter that encodes for…

Q: Figure 5 shows the lac operon structure in Escherichia Coli What will happen if substance S is…

A: Lac operon contains genes coding for proteins in charge of transporting lactose into the cytosol and…

Q: The tryptophan operon is regulated by two methods. Describe in detail the regulation of the operon…

A: Genes are the functional unit of heredity. Operons are a group of genes under a single promoter. The…

Q: Binding of polymerase to the operon requires what? An appropriate consensus sequence in the operator…

A: An operon is a functional unit of DNA in prokaryotes, consisting of a cluster of genes under the…

Q: 7. The diagram below represents the full mRNA transcribed from the trp operon under conditions of…

A: 1. **Structural genes (A)**: These genes are part of the trp operon and are responsible for encoding…

Q: The lac repressor is a trans-acting protein that affects the function of transcription in the iac…

A:

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: dỗ the lác, trp repressor and CAP protein have in common? O They have a Helix-Turn-Helix Motif O…

A: Bacteria employ polycistronic expression of genes. The genes are arranged as a unit called an…

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.