BONUS One benefit of operons in bacteria is that they A O allow for the bacteria to utilize a wide variety of carbon sources. B) O allow for coordinated gene expression of related genes on one mRNA controlled by one promoter. C) O do not need ligands and regulatory proteins as single genes would. D) O do not need any modification of the proteins after they are expressed.

Q: When tryptophan levels are high in E. coli, what conformation does the trp leader mRNA adoptand what…

A: The question is asking about the effect of high tryptophan levels on the conformation of the trp…

Q: promoter DOWN mutation is a mutation DA) Leading to a shorter RNA molecule B) Leading to less or no…

A: Mutation is abrupt changes in the DNA nucleotide sequences that may bring about changes in the amino…

Q: Explain and give examples of Inducible & Repressible Operons. Describe what types of protein…

A: Inducer: Inducer is the substance that causes the gene for protein synthesis to be activated.…

Q: Transformation: A) O is the process by which a bacterium converts genetic information into a protein…

A: Prokaryotes are the single celled organisms (unicellular) and are the simplest form, which do not…

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: Operons are a common feature of bacterial genomes. Which of the following statements about the lac…

A: Lac operon has three important genes that helps the bacteria to take up the lactose sugar when…

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: Operons can not be:   a. Negatively regulated b. Positively regulated c. Constitutive d. Inducible…

A: The workhorses of a body are proteins. All or every function of the body are carried out by the…

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: d) What would happen if the majority of DNA between the enhancer and site of RNA pol binding was…

A: Gene expression is a multistep process involving replication, transcription, and translation as the…

Q: i)Describe attenuation control and how it is used to regulate gene expression. ii)Give a specific…

A:

Q: . true or false a) Capping is the process of adding poly-guanido methyl in the mRNA. (true/false)…

A: Ans a.)  Capping is the process of adding poly-guanido methyl in the mRNA. True  # It is a kind of…

Q: Which of the following statements is not true of both the LacI and TrpR repressor proteins?a) an…

A: The objective of the question is to identify the statement that is not true for both LacI and TrpR…

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: a. The original constitutive operator mutations in thelac operon were all base changes in o1. Why…

A: The original constitutive operator mutations made in the lac operon involved base changes in the O1.…

Q: Which of the following is false when the genes of the Lac operon are being tran- scribed in high…

A: Lac operon is a set of genes used by E.coli to metabolize lactose when glucose is not available for…

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: . 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: 1. A. A mutation in E. coli is found that fails to induce the arabinose operon. Upon further…

A: A mutation is a change to the DNA sequence of a cell. This change can be due to rearrangements on…

Q: Metabolic control is crucial part of survival for all bacteria. The lactose operon is located on the…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A mutant strain of Salmonella bacteria carries a mutation of the rho protein that has fully activity…

A: In bacteria, two transcription termination mechanisms take place. Intrinsic termination, which is…

Q: Expression of a gene, in terms of greater accumulation of the protein it encodes, could be increased…

A: Often biomolecules like protein are produced in our body for any bodily functions. They are specific…

Q: Give the Genetic Proof of the Operon Model ?

A: An operon represents a genetic unit with one or more structural genes and an operator sequence and…

Q: The mechanism by which lactose controls the lac of A) O Catabolite repression B) O DNA polymerase C)…

A: Operons are studied to understand the regulation of gene expression. It is studied under the domain…

Q: The transcripts from dispersed core promoter type genes will a) start from a defined single site b)…

A: A. The RNA polymerase II center advertiser is for the most part characterized to be the grouping…

Q: Does it need active form or inactive form of the repressor ? 3) What is role of RNA polymerase,…

A: An operon is defined as the collection of coordinately regulated genes . Q2Ans:In a negative control…

Q: Which of the following would you expect to act only in cis (and not in trans)? Select all correct…

A: Cis acting elements are regions of DNA which regulate the transcription of neighbouring genes.…

Q: Explain the function of trp operon in bacteria, the mode of that operon, the context that will turn…

A: A group of genes making up a regulatory or control unit. The unit includes regulator,  operator,…

Q: Which sequence is most likely to be found in a promoter? a) CGGTGTATATCGTAC b) GTACAGTCATCCCGT c)…

A: Promoter It is a DNA sequence that controls whether a gene is turned on or off. The promoter…

Q: In lac operon, both gene A and gene B undergo a transcription process. Gene B can only undergo…

A: An operon is a gene regulation mechanism in prokaryotes.

Q: Suppose the tRNA synthetase responsible for attaching tryptophan to tRNA is muted in a bacterial…

A: In order to maintain correct transcription and translation, bacterial operons use attenuation as a…

Q: a) What is a gene promoter? b) What proteins bind to a promoter? c) What do those proteins do to…

A: a) A gene promoter is a region of DNA located at the beginning of a gene sequence. It serves as a…

Q: The regulation of the trp operon genes by the Trp repressor protein is an example of ______ gene…

A: The regulation of the trp operon genes by the Trp repressor protein is an example of  negative gene…

Q: Choose all of the following that you think are correct Protein(s) that play a role in initiating…

A:

Q: What is a response element? O A) A short stretch of DNA sequence implicated in the initiation of…

A: They are short sequences of DNA within a gene promoter or enhancer region that helps in regulation…

Q: How do repressors reduce transcription of an operon? A) recruit RNA polymerase to promoters B)…

A: Repressors are the proteins that has a negative effect on the expression of gene. These are those…

Q: The DNA sequence before the protein coding region that determines when a gene is used is called the…

A: DNA is the genetic material of many organisms including the humans. The DNA contains information…

Q: The absence of tryptophan (trp) in E. coli A) O produces an inactive trp repressor B) O causes…

A: The gene regulation in prokaryotes (E. coli) is controlled by operon system. On operon system…

Q: One 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: The operator of the lac operon is upstream of the gene that codes for enzymes. What does upstream…

A: Lac operon: The lac operon is a genetic regulatory system found in bacteria that controls the…

Q: what is a promoter and give the element and their functions of E.coli promoter  b) what are…

A: The Hox transcription factor family is important for proper body pattern formation in organisms as…

Q: What is an operon? Describe the functions of regulators, promoters,and operators.

A: The structure responsible for the regulation of genes in order to synthesize the associated proteins…

Q: Regarding transcriptional promoter sites, which of the following statements are true? Select one or…

A: Introduction  The process of converting a piece of DNA into RNA is known as transcription. Messenger…

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.