Hypothesize and diagnose the impact of variability on lac operon regulation

Q: Explain how the trp and lac operons of prokaryotes areregulated.

A: Introduction  Gene Regulation: Expression of gene is highly regulated in both prokaryotes as well as…

Q: Explain why catabolite repression is used in regulating the lac operon and describe how it…

A: An Operon is a unit of structure and function that consists of the clusters of regulatory genes…

Q: Inversion of an enhancer region does not affect gene expression, but inversion of the promoter…

A: Key references:Bozhilov, Y. K., Downes, D. J., Telenius, J., Marieke Oudelaar, A., Olivier, E. N.,…

Q: lacZ expression Low Low High High Media + glucose - lactose + glucose + lactose - glucose - lactose…

A: lac operon is an inducible operon. That is, the lac operon is generally turned off and it is turned…

Q: Suggest a direct experiment to prove that p53 binding at gene promoters affects the level of gene…

A: p53 is a protein responsible for tumor suppression and helps in regulation of the overgrowth of…

Q: Compare and contrast the lac operon and repressible operon systems.

A: Expression of each and every gene is not always required in an organism. Gene expression must occur…

Q: The regulatory gene that codes for the tryptophan repressor is not tightly linked to the trp operon.…

A: Bacteria such as E.coli need amino acids to survive and such as amino acid Tryptophan. If tryptophan…

Q: You have discovered a new bHLH gene and would like to use ChIP-Seq to learn more about it's role in…

A: A basic Helix-Loop-Helix Domain (bHLH) is a very common domain found in proteins that act as…

Q: Explain how glucose represses the lac operon.

A: Operons can be defined as the regions of DNA that contain the clusters of related genes. They are…

Q: Compare and contrast how activators, coactivators, repressors,TFIID, and mediator play a role in…

A: Transcription is a process of transcribing the template DNA into complementary mRNA sequence which…

Q: Differentiate between positive and negative control, and show how both types of control operate in…

A: Controls are always part of the scientific experiments. They help researchers to conduct…

Q: Give the Evidence for the trp Operon ?

A: If tryptophan is available in the surrounding the E. coli (bacteria)  will take it up and use it to…

Q: What was the eventual hypothesis proposed bythe researchers to explain the function of the lacI gene…

A: To define the function of the lacI gene and the regulation of the lac operon.

Q: Describe how the trp operon is under negative control

A: Introduction  Gene Regulation: Expression of gene is highly regulated in both prokaryotes as well as…

Q: What are some advantages and disadvantages of using mathematical models to study biological…

A: An operon is defined as a group of genes that has a common promoter and regulator and also…

Q: If there was a mutation such that the lac I protein could no longer bind lactose, but could still…

A: Lac operon is responsible for the metabolism of lactose in bacteria.

Q: Define regulation of gene expression with suitable model (lac operon) ?

A: Gene expression is the process by which the instructions in the DNA are converted into a functional…

Q: provide additional avenues for the regulation of gene expression in eukaryotic organisms

A: Gene expression can be defined as the process by which the instructions in our DNA are converted…

Q: Explain how HOTAIR plays a role in the transcriptional regulationof particular genes.

A: A gene is a sequence of nucleotides in genome that codes for a functioning molecule. There is…

Q: Compare the control of gene regulation in eukaryotes and prokaryotes at the level of initiation of…

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

Q: What led researchers to conclude that a repressor moleculeregulates the lac operon?

A: Lac operon is regulated by the lac repressor molecule.

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: Is RNA silencing an environmentally-induced epigenetic change? Explain.

A: The regulation of gene expression via alterations to DNA, RNA, or histone proteins is known as…

Q: Explain how the data shown indicate that two operator sites are necessary for repression of the lac…

A: Introduction: Lac operon exerts positive control on catabolite repression that leads to an increase…

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: A low level of expression of lac operon occurs at all the time.can you explain the logic behid this…

A: The operon is the group of genes controlled by shared protein. Operons have multiple genes with…

Q: Explain the evolutionary/logistical advantages of organizing genes into operons?

A: An operon is a cluster of genes that are functionally related and are controlled by a shared…

Q: Explain how regulatory regions of the lac operon canbe used in the production of pharmaceutical…

A: The lac operon is an operon that allows the bacteria to use lactose to synthesize energy. It is…

Q: Compare and contrast the Lac and Trp operons in bacterial genetic systems

A: Operon is basically the cluster of genes that are transcribed together and gives a single 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.