6. By incubating cells with an inhibitor of TFIIH helicase activity. Which step in the transcript would be affected and why? 7. A cell has a mutation that inactivates TAF1 at temperatures greater than 37oC. What will happen in that cell at temperatures greater than 37 oC in class II promoters without TATA box? Why?

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

A: There are two regulatory factors present in the lac operon of E.coli  These are the repressor…

Q: 67 RNA interference was first discovered in Drosophila melanogaster. Yes or no 68 Which of the…

A:

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: A transcriptional regulator know as ComR may interact with a small protein, Prx 8.1 kDa). The…

A: Gel filtration chromatography (sometimes referred to as size exclusion chromatography, or SEC), is a…

Q: 4. Shown here is a regulation of a gene a) Is this a prokaryotic or eukaryotic gene? Explain in…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: 1. For each of the following, explain how eukaryotic transcriptional initiation would be affected.…

A: According to bartleby expert guidelines, when multiple questions are posted we are allowed to answer…

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: only in cell biology the Lac operon in bacteria encodes proteins required to import and digest the…

A: The lac operon, also known as the lactose operon, is found in E. coli and other intestinal bacteria.…

Q: 1. in a TATAT sequence, would the number of sequences similar to a promoter increase or decrease if…

A: In this question, we discuss the possibility of variation affecting the number of sequences similar…

Q: 1. In E.coli transcription of the Lac Operon is known to be under Global control. For this operon…

A: The lac operon, found in E. coli, comprises genes responsible for lactose transport and metabolism1.…

Q: 12. You want to determine the location of the promoter and operator for an operon. To do so, you…

A: 1) If operator is removed, expression becomes constitutive 2) If promoter is removed, there should…

Q: How does induction control enzyme synthesis using lactose operon?  2. Describe how level of a key…

A: By controlling the transcription of the mRNA which is needed for the enzyme synthesis, the genetic…

Q: 1.Generally, demethylation on the promoter region of a gene blocks transcription. True\False?…

A: Disclaimer: - According to the Bartleby guidelines, only the first three true/false questions can be…

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: 3). Consider the four mutations (i-iv) described below: i. One of the mutations causing cystic…

A: A mutation is a permanent change in the DNA sequence of an organism's genome. Mutations can occur…

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: 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: 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: 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: 3. Draw an anabolic operon with three biosynthetic genes for compound Q and a catabolic operon with…

A:

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: In the figure below, what is represented by the line labeled A? TFIIB recognition element DNA in m…

A: Transcription of genes includes the formation of RNA using the template DNA. It includes the enzyme…

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: 1. You have identified a novel protein that shows structural similarity with NELF. You next examined…

A: NELF is a negative elongation factor that is composed of four distinct protein subunits. These…

Q: QUESTION 3 DNA methylation O a. You cannot methylate DNA O b. Enhances O c. Represses O d. Represses…

A:

Q: What statement is NOT true regarding transcription attenuation of amino acid biosynthetic operons?…

A: Amino acid biosynthesis is an anabolic process in which a molecule is synthesized as an end product.…

Q: 5. Scientists recently described a unique family of chemotactile receptors (CRs) that allows for…

A: Octopuses are highly intelligent and resourceful animals that possess a complex nervous system and…

Q: Part of a gene is written below, and transcription begins at the boxed T/A base pair and proceeds…

A: Gene is present on a chromosome and contains hereditary information. These genes are later…

Q: The nr2f5 gene is transcribed into mRNA in both neurons and glia. The microRNA miR-5xb has partial…

A: Introduction  The expression of genes is highly regulated in both prokaryotes as well as in…

Q: 5. As you know, the lac promoter is a poor intrinsic promoter: it is transcribed efficiently only…

A: Q 5.) Ans.The given question explores the lac operon's regulation in E. coli through mutagenesis and…

Q: A scientist has discovered a strain of bacteria that can convert ethanol to pyruvate when stimulated…

A: Solution 1) The repressor of this operon is functional It is active when ethanol is absent and…

Q: In bacteria sigma factors: 1. Transcript factors 2. Specialized subunit of the core enzyme 3.…

A: In prokaryotic (bacteria) transcription process the RNA polymerase perform the synthesis of RNA…

Q: You are examining a set of genes from a phage that are transcribed late in infection. You know that…

A: Transcription: It is a process of synthesis of mRNA transcript from the double-stranded DNA as a…

Q: 26. Synthesis of a repressible enzyme is stopped by a the allosteric transition b. the substrate…

A: In the regulation of gene expression, various mechanisms come into play to control the activity of…

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: For the lac operon, when glucose is absent and lactose is present. CAMP-CAP is bound to the promoter…

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

Q: 1- How does the sigma factor control whether it can start transcription together to give way to RNA…

A: Transcription is the process where one strand of DNA is transcribed into RNA is known as antisense…

Q: 1). Tumor suppressor proteins monitor DNA and detect damage. Some cancers evade this detection by…

A: Tumor suppressor proteins helps to control cell growth and activated in response to DNA damage and…

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

A: Any bacterial gene can be classified as an operon.An operon is a collection of bacterial genes with…

Q: Section 1: Matching restriction enzyme Barr body CCAAT box enhancer TATA-binding protein A. highly…

A: Restriction enzymes: Restriction enzymes are important tools in molecular biology that are used to…

Q: 1c  In context with transcription of prokaryotic genes briefly describe the effect the lac…

A: Transcription within the prokaryotic cell is regulated by the complicated interactions 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.