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: 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: d. What does ‘transfection’ mean? e. What are ‘single clones’ and how did various single clones…

A: de novo DNA methylation is the addition of methyl groups to specific sites in the promoter region of…

Q: Name and describe two types of constitutive mutants of the lactose operon.

A: Operon can be defined as an operating unit, which is nothing but gene clusters that are located…

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: In fruit flies, the sex development gene contains six sections. If sections 1,2,3,5, and 6 are…

A: Fruit fly is commonly known as Drosophila melanogaster and is typically used in research owing to…

Q: a bacterial cell in which the [ Choose ] F plasmid has become part of the chromosome lesion caused…

A: Given: To match all the given explanation with wording.

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: ne of the main lessons of this chapter is that several bacterial genes are often transcribed from a…

A: As given: Several bacterial genes are often transcribed from a single promoter into a large…

Q: Binding of transcription activator protein     Gene is switched ON     Gene is switched OFF…

A: Transcription is a process by which information of DNA segment is copied into the mRNA and it is…

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: Utilizing lactose operon, how can we explain how induction controls enzyme synthesis 2. Use…

A: An operon is a group of genes that code for proteins that are involved in a single cellular…

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: In order to identify cis-regulatory elements for the BRC2 gene in Arabidopsis thaliana, you develop…

A: The region of non coding DNA that play a critical role in gene expression regulation is known as cis…

Q: Some prion-related diseases, such as familial fatal insomnia, areinherited. How would you expect the…

A: Familial fatal insomnia is a medical condition characterized by insomnia or trouble sleeping. This…

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: 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: In rho dependent transcription termination the rho factor binds to? You have a 18 ml sample of…

A: Introduction :- A zygote is the initial cell formed when two gamete cells (sperm and egg) fuse…

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: 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: 1. Using the data available describe the phenotype that you observe when each of these three genes…

A: The question is related to the use of RNA interference (RNAi) to study the function of specific…

Q: 5) The bacterial Lac operon is an example of transcriptional regulation. What are the major…

A: Using an example of Escherichia coli for the bacterial lac operon. Escherichia coli is a…

Q: Complete the table to figure out if transcription is happening or not.   Glucose Lactose LacI…

A: Operons are a combination of genes that function together to regulate the transcription of…

Q: You have created a deletion of the ribosome binding site for the leader sequence of the trp operon.…

A: trp stands for tryptophan operon.In trp operon, there are 5 structural genes viz., trp E, trpD,…

Q: Which statement about the transcription attenuation mechanism is TRUE? 1.In some operons (e.g., the…

A: Transcriptional attenuation is a regulatory mechanism that causes premature termination of…

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: . The tac promoter, an artificial promoter made from a chemically syn- thesized oligonucleotide, has…

A: The lac operon in e.coli is repressed by the presence of lactose, while it is derepressed by the…

Q: The transcription of a gene called YFG (your favoritegene) is activated when three transcription…

A: An enhanceosome is a group of trans-acting factors that assemble at an enhancer region of a gene to…

Q: Under the following conditions, what will be occurring with the lac operon? Glucose: Present…

A: lac operon is present in E.coli and contain genes that control lactose metabolism and only active…

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: 20. You are modelling a genetic circuit shown above on Simbiology. What would the Reaction Rate…

A: Simbiology is a software application that is used to model and simulate biological systems,…

Q: Methylation of H3K9 by itself silences genes, but if H3K4 and H4K20 are also methylated, the…

A: Histones are the basic proteins that are employed in nucleosome formation during the chromatin…

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: A mutation in which of the following would still allow RNA polymerase to bind to promoters but would…

A: To start transcribing a gene, RNA polymerase binds to the promoter region of the gene's DNA. It has…

Q: 12a. In what condition is the LacZ gene transcribed? ANSWER (in one sentence) 12b. Fill in the…

A: The lac operon is a cluster of genes, including the lacZ, lacY, and lacA genes, that are involved in…

Q: it and answer the following questions. Recent studies showing a correlation between the levels of…

A: Cytosine is one of the four nucleobases found in DNA and RNA, along with adenine, guanine, and…

Q: In Figure 6-19,a. what do the square/triangular pegs and holesrepresent?b. is the suppressor…

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

Q: Which of the following is a likely outcome of Rifampin treatment? Transcriptional elongation is…

A: Answer. Rifampicin is a major derivative of the antibiotic rifamycin. This antibiotic binds to the…

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.