Can one transcription factor sometimes act as a repressor and sometimes act as an activator? O a. Yes, but it depends on where the transcription factor binds in the promoter O b. Yes, but it depends on other proteins that migth act with the transcription factor O c. No, transcription factors are always either activators or repressors O d. Yes, but only if a mutation happens One of the genes upregulated by EWS-FLI1, PTPL1, is a protein tyrosine phosphatase. Which statement about protein tyrosine phosphatases is FALSE? O a. They can inactivate cytoplasmic proteins by removing a phosphate O b. They can inactivate tyrosine kinase receptors by removing a phosphate O c. They can activate cytoplasmic proteins by removing a phosphate O d. They can inactivate cytoplasmic proteins by adding a phosphate

Q: Can you explaint it?

A: Gene expression in eukaryotic cells could be a complex process that involves multiple steps, from…

Q: 10.

A: Epigenetic regulation refers to the mechanisms that control gene expression without changing the…

Q: A researcher found that she could increase phosphorylation of amino acids adjacent to methylated…

A: Histone Phosphorylation It is associated with transcriptional activation.  It takes place with the…

Q: Where does allolactose, the inducer of the lac operon, bind? a. to the operator O b. to the…

A: Lqc operon is the set of genes responsible for the metabolism of lactose in Ecoli . The lac operon…

Q: List one example of AMPLIFICATION OF SIGNAL during the cell’s response to Hedgehog

A: * Hedgehog signalling pathway is important during embryogenesis to  controll proliferation of tissue…

Q: Mutations outside of the coding region of a gene can have an effect on the expression of the gene.…

A: Mutations can be defined as a change in nucleotide sequences. It can occur either due to error…

Q: Why is regulating transcription the main way that cells control gene expression?     A. Because…

A: Transcription is the process in which RNA is synthesized with the help of RNA polymerase enzyme. RNA…

Q: Name the lambda promoters whose expression is regulated by the cro protein. For each promoter you…

A: CI represses cro and Cro represses cI. This is referred to as the double-negative feedback loop and…

Q: How does finP inhibit TraJ from activating expression of the tra genes? O It basepairs with the traJ…

A: Here both FinO and FinP play important role  TraJ, is controlled by the action of the antisense RNA,…

Q: How does the GA(T>C)A mutation in the Duffy promoter impact Duffy transcription? GACA enhancer does…

A: Duffy is a gene which expresses a protein called duffy protein. This protein act as membrane bound…

Q: Select the answer that correctly expresses a valid comparison between transcriptional regulation in…

A: Transcriptional regulation is far more complex in eukaryotes than in prokaryotes. Prokaryotic…

Q: Enhancers in eukaryotic genomes such as glucocorticoid response elements can upregulate multiple…

A: An Enhancer in Eukaryotic genomes is defined as the DNA sequence which promotes the transcription.…

Q: How would you describe the "purpose" of alternative splicing? Alternative RNA splicing... is a…

A: Nucleic acid is a macromolecule present inside the nucleus of cell . It stores genetic material and…

Q: The following are examples of how eukaryotic cells may control gene expression small RNA molecules O…

A: The eukaryotic genome is huge and consists of millions of base pairs. It is highly packed in…

Q: tatement about the HATS is FALSE? do not interact with non-pioneer regulatory transcription facto…

A: HATs : Histone acetyl transferases. These are the enzymes that acetylate conserved lysine residuals…

Q: -If the first G get deleted what kind of mutation will happen? Show the change in amino acid…

A: Any Change in the genetic material, which is not caused by recombination, that leads to altered…

Q: The abortive transcription occurs Select one: O a. When transcription is terminated. O b. during…

A: Answer. Transcription is a process of formation of of RNA transcript. It takes place by the usual…

Q: You gather the following data on the expression of a eukaryotic gene which experiences positive gene…

A: Eukaryotic gene expression are mainly regulated at 4 stages ; Transcription level: gene product is…

Q: In a couple of sentences, explain how eukaryotic activator proteins (that are usually gene-specific…

A: Transcription factors are proteins that bind to neighbouring DNA and help switch particular genes…

Q: To which part of DNA do the eukaryotic transcription factors bind? O a. promoter regions O b.…

A: Transcription is the synthesis of RNA from DNA that is the process of copying the information of a…

Q: How can an enhancer that regulates expression of a given gene be active in one tissue but inactive…

A: Enhancers, also known as transcription factors, are DNA regulatory elements that can be bound by…

Q: The -10 and the -35 boxes found in bacterial gene promoters function to activate transcription at…

A: Promoter sequences are DNA sequences that define the initiation of RNA polymerase transcription of a…

Q: of gene. 12. Steroid hormone receptor complex binds to the A. transcription start site B. promoter…

A: Steroid hormones are lipid-soluble molecules that can easily diffuse through the cell membrane to…

Q: Enzymes that catalyze RNA-directed DNA synthesis are called ______. A(n)__________ is an enzyme that…

A: Introduction :  One of the initial steps in gene expression is transcription. The transit of genetic…

Q: Based on my your observations, describe the role of the transcription factors and the regulatory…

A: Central dogma involves a method where RNA formed from DNA , and DNA shows heterocatalytic neture,…

Q: Discuss the control of gene expression in eukaryotes. keep it short plz

A: gene expression: It is a process of transcription of a gene into mRNA, processing of mRNA and…

Q: Select all of the regulators of transcription that bind to DNA when an allosteric effector (inducer…

A: The regulators of transcription that bind to DNA when an allosteric effector is present. Allosteric…

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: Insulator regions make sure that A. genes are protected from transposon insertions B. genes are…

A: Gene is the basic unit of inheritance in the DNA of organisms. They have a specific role in an…

Q: Alternative RNA splicing

A: Alternate RNA Splicing   It is a mechanism during gene expression where a single gene code for…

Q: Vhich statement about DNA methylation is true? D It requires a histone methylase. D It involves the…

A: DNA methylation is a process in which methyl groups are attached to different bases of DNA with the…

Q: In which of the following scenarios is the signal a positive regulator of gene expression?

A: The right option is : None of them

Q: Gene expression is... How genes are replicated into two new strands identical to each other How…

A: Gene expression is the process in which DNA is transformed into a functional product such as…

Q: The abortive transcription occurs Select one: O a. during transcription elongation O b. when there…

A: Only the RNA polymerase holoenzyme can initiate transcription. The core enzyme has the ability to…

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.