What are the 3 ways in which sRNAs regulate the translation of mRNAs?

Q: What does histone acetylation favor?

A: The DNA (deoxyribonucleic acid) in cell is wrapped around proteins called histones. A DNA segment…

Q: Discuss the roles of histones in eukaryotic transcription. How might histones inhibit transcription,…

A: Histones are proteins that gather and design the DNA of eukaryotic cell cores into units called…

Q: Why it is that transcription & translation could be coupled in prokaryotic cell but not in…

A: The DNA is the genetic material that is passed from one generation to the next generation. It is…

Q: What is the functional role of the TATA box?

A: DNA ( Deoxyribonucleic acid) is a long chain made up of nucleotides. It carries genetic information.…

Q: What are the mechanisms by which regulation bysRNA occurs?

A: RNA (ribonucleic acid) is a polymer of nucleotides and is composed of a pentose sugar, a nitrogen…

Q: What are Suppressor mutations in tRNA genes?

A: Mutation is the sudden heritable changes that occur in the DNA sequences due to error while copying…

Q: What is the major function of a Src homology-2 (SH2) domain?

A: It is a structurally conserved protein domain contained within the Src oncoprotein and present in…

Q: What are the roles of sigma factor, rho factor, and an intrinsic terminator in transcription in…

A: Introduction: Transcription is the synthesis of single-stranded messenger RNA (mRNA) from the…

Q: What are Trna-THE ADAPTER MOLECULES?

A: RNA (ribonucleic acid) is one of the nucleotide chains, primarily composed of the nitrogen bases…

Q: What are the 3 types of post-transcriptional modifications and what are they for?

A: Transcriptional modification is a set of biological processes in which an RNA transcript is…

Q: What event in eukaryotes serves as the "trigger" for entering the elongation phase of transcription…

A: Transcription occurs in the three steps—initiation, elongation, and termination. The elongation…

Q: How does RNA regulate gene expression? Specifically what is the pathway siRNA and miRNAs regulate…

A: The genes are expressed when the genetic codes of the DNA are fully converted into the protein…

Q: What are the similarities and differences in the initiation of gene transcription in bacteria and…

A: similarities and differences in the initiation of gene transcription in bacteria and eukaryotes

Q: How does histone acetyltransferase affect nucleosome structure and transcription?

A: Histone acetyltransferases (HATs) are enzymes that acetylate conserved lysine residuals on histone…

Q: Name and discuss two transcription regulatory elements that can be found in the figure. (6) 4.2.…

A: RNA polymerase is a main enzyme responsible for the the transcription of RNA by coding complementary…

Q: Some mutations in the trp 5′ UTR increase termination by the attenuator. Where might these mutations…

A: Tryptophan operon consists of a leader region located at the 5' terminal of mRNA called 5' UTR. The…

Q: What are elements of role transition from RN to APN?

A: RN is an abbreviation for Registered Nurse and APN is an abbreviation for Advance Practice nurse.

Q: What are the functions of transcriptional activator proteins and repressor proteins? Explain how…

A: Transcription is the first step in central dogma of protein synthesis. It involves formation of…

Q: What are the differences between hnRNAs, snRNAs, miRNAs, siRNAs, and snoRNAs?

A: hnRNAs, snRNAs, miRNAs, siRNAs, and snoRNAs are the different classes of small RNAs involved in…

Q: What is meant by the term histone code? With regard to gene regulation, what is the proposed role of…

A: The mechanism that acts to suppress or induces the gene expression is called gene regulation. These…

Q: Which of the following is true for gene regulation in both bacteria and eukaryotes? Selected answer…

A: Gene regulation refers to the act of activating and deactivating genes. Cells start to perform…

Q: What are snRNPs? What is their role in the processing of eukaryotic mRNAs?

A: DNA is the genetic information carrier in almost all organisms except for a few RNA viruses. DNA is…

Q: what is the role of rna polymerase? Does it catalyzes the polymerization step (adding new nucleotide…

A: RNA polymerase is a critical enzyme in the transcription process, which is the first step in gene…

Q: List the 5 general transcription factors required for initiation of transcription in eukaryotes.

A: Transcription is the process of converting genetic information stored in DNA into RNA molecules.…

Q: which exons become spliced together?

A: Splicing is the editing of the nascent precursor messenger ribonucleic acid (RNA) called pre-mRNA…

Q: What role does RNA stability play in gene regulation? What controls RNA stability in eukaryotic…

A: Gene regulation is defined as the mechanism by which the cells increase or decrease the production…

Q: Why does histone deacetylase action tend to repress transcription?

A: Transcription is the process of producing messenger RNA. This mRNA synthesizes proteins which is…

Q: explain which sequences within the pre-mRNA determine where splicing occurs? How? Why?

A: Splicing of a pre-mRNA molecule occurs in several steps that are catalyzed by small nuclear…

Q: What is the difference between how miRNA stops gene expression and how siRNA does?

A: The siRNA is obtained from the double stranded RNA after splicing of cutting by Dicer enzyme. But…

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.