1. The B-galactosidase gene of the lac operon is expressed at high level when which combination of following conditions is met? A. Select one answer for each of the following. Lactose concentration low high Lac Repressor Protein Inactive Active CAMP concentration low high Catabolite Activator Protein (CAP) Inactive Active B. Describe a mutation in a noncoding regulatory element that would result in constitutively high ß-galactosidase expression in the presence of both low glucose and low lactose. Explain its effect on gene regulation.

Q: 1) The logic of the Lac operon was deciphered by using bacterial lac-operon mutants. Crucial to the…

A: Lac operon is a genetic unit in bacteria that helps in the metabolism of lactose in E.coli and lac…

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: E) The regulatory protein that controls expression of the hexose operons is a transcriptional…

A: The regulatory protein that controls expression of the hexose operons is a transcriptional…

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: A mutation in the operator region of the trp operon can prevent the trp repressor from binding to…

A: Operons are the functional unit of transcription and regulation of genes in almost all bacteria and…

Q: Remember that hexose kinase is an enzyme required for hexose metabolism, a process that takes a…

A: Cellular respiration is a catabolic pathway of the process of metabolism, where a series of chemical…

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: 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: 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: It has been proposed that thiogalactoside transacetylase (LacA in the lactose operon) plays a role…

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

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

A: The bacterial transcription unit containing more than one gene is known as an operon. An operon has…

Q: In terms of the efficient use of bacterial resources, explain why it is necessary for lac operon…

A: Lactose can be broken down by E. coli bacteria to produce glucose and galactose. The lac operon…

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

A: INTRODUCTION: Tryptophan (trp) operon for the synthesis of the amino acid tryptophan, is an example…

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: A mutation that inactivates transcription and translation from the regulatory gene of an inducible…

A: An operon is a functional unit of genomic DNA that comprises a collection of genes that are all…

Q: The polycistronic Histidine Operon in E. coli encodes all of the proteins necessary for the…

A: An operon is a gene unit of bacterial system whose transcription is positively and negatively…

Q: Question 2 : With respect to the E.coli Lac operon, the lac repressor is: A. DNA B. RNA C. Protein…

A: DNA

Q: Please answer the following question

A: Hope it help answer your questions. Let me know if you have any clarification. Thank you.

Q: 1) The UR operon which is composed of sequences A, B, C, and D (which may or may not be genes of…

A: An operon may be considered as a group of certain genes which function together so as to regulate…

Q: If CAP is bound to the Promoter of the Lac Operon and the repressor protein is not bound to the…

A: Operon is the prokaryotic gene regulatory system that controls the expression of polycistronic mRNA.…

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: 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: 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: 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: ac operon.  Drag the listed molecules to their corresponding bin. Reset Help   ONPG IPTG X-Gal…

A: ONPG - beta-galactosidase cleaves this molecule to form a visible yellow product. Explaination:  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.