Briefly explain how transcriptional activator and repressor proteins affect the level of transcription of eukaryotic genes.

Q: Give the structure of transcription in eukaryotes?

A: Eukaryotic transcription is the intricate mechanism used by eukaryotic cells to copy genetic…

Q: Consider the Rho-dependent terminator sequence 5’CCCAGCCCGCCUAAUGAGCGGCCUUUUUUUU-3’. What affect…

A: The mutation is the change in the nucleotide sequence of the DNA. The point mutation is the mutation…

Q: Discuss the common points of control in eukaryotic gene regulation.

A: The process of turning the gene off or on is called gene regulation. Cells start to perform specific…

Q: Explain the single transcription factor can be both an activator and a repressor

A: Introduction  Protein is the key biomolecule in the biological system, any important physiological…

Q: Describe how prokaryotic gene expression occurs at the transcriptional level

A: Biology is the scientific approach to study life. All the living forms share certain key features…

Q: Describe the significance of the promoter region in terms of gene expression. What is a common…

A: It is a sequence typically referred as that's right upstream or right next to where a gene is about…

Q: Compare transcription initiation in prokaryotes and eukaryotes?

A: Transcription is a process through which the genetic information present in the DNA molecule is…

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: List the levels of control of gene expression in eukaryotes.

A: Eukaryotes are referred to as organisms that comprise the well-defined nucleus, and a nuclear…

Q: Describe the steps of transcription in eukaryotes

A: Eukaryotic transcription is carried out in the nucleus of the cell by one of three RNA polymerases,…

Q: Briefly explain How does post-transcriptional regulation work in prokaryotic and euk

A: Post-transcriptional regulation is essential for controlling gene expression in highly dynamic…

Q: Explain the role of allostery as being one of the regulating properties of gene expression.

A: An enzyme is a biocatalyst that speeds up the chemical reaction. It is a protein that is made of…

Q: Discuss the role of chromatin and modification of chromatin structure in controlling eukaryotic gene…

A: The mechanism of encoding of proteins by a gene which regulates cellular functions is known as gene…

Q: Briefly list some of the ways in which siRNAs and miRNAs regulate genes.

A: miRNA or micro RNA and siRNA or small interfering RNA or silencing RNA are a type of RNA molecules…

Q: Discuss the function of enhancer sequences ineukaryotic transcription

A: The eukaryotic transcription is an elaborate process in which eukaryotic cells use to copy genetic…

Q: Describe the cis-acting elements that control tissue-specific transcription of eukaryotic…

A: Step 1 Transcription is the formation of RNA (ribonucleic acid) over the template of DNA…

Q: Most eukaryotic promoters have binding sites for several different transcription factors, and the…

A: In bioinformatics, incorporating preexisting route information into microarray data has become a…

Q: Identify the levels at which gene expression can be regulated in prokaryotes and eukaryot Which of…

A: The gene is a sequence of nucleotides that encode a specific protein. The gene expression is…

Q: Contrast the characteristics of prokaryotic and eukaryotic genes. What  are the implications for…

A: Prokaryotic genes are typically organized into operons which are functional units that contain…

Q: Describe the process of transcription in eukaryotes from the time the RNA polymerase binds to the…

A: The process of transcription in eukaryotes occurs in the nucleus of the cells and it includes the…

Q: Explain aspects of the regulation of gene expression in eukaryotes?

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

Q: Some compounds called antiinducers bind to repressors such as the lac repressor and inhibit the…

A: Operon is a genetic regulatory system that is mainly found in bacteria and viruses. In this system,…

Q: Name four control points of regulation of eukaryotic gene expression, and where they occur in the…

A: The four control points of regulation of eukaryotic gene expression are – Epigenetics Transcription…

Q: Explain the two major ways in which transcription is repressed in eukaryotes

A: Transcriptional repressors are actually proteins that bind to specific sites on DNA. Their binding…

Q: With the aid of diagrams, and using specific examples, describe how gene expression is regulated in…

A: Transcription Is the process of formation of mRNA from DNA and this happens in the cytoplasm of the…

Q: State whether each of the following would be likely to (generally) increase or decrease the…

A: Gene expression regulation involves the modification of both the DNA and the packaging proteins…

Q: Discuss the regulation of transcription in eukaryotes, including the roles of transcription factors…

A: Introduction: Transcription is the mechanism by which an RNA copy of a gene sequence is produced.…

Q: Define how Activators and Repressors Interact with General TranscriptionFactors ?

A: Transcription factor binds to sites called enhancers and silencers which can switch on or off the…

Q: Can methylation state of the promoter influence the level of gene expression? Briefly describe how…

A: In eukaryotes, DNA methylation occurs by an enzyme known as DNA methyltransferase. Where the…

Q: List some important differences between bacterial and eukaryotic cells that affect the way in which…

A: Gene regulation involves the expression of certain genes at a time out of all the genes present in…

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.