Which of the following accurately describes the function of HOTAIR? O It is a long non-coding RNA that regulates transcription of target genes by recruiting the chromatin modification complexes LSD1 and PRC2 It is a scaffold RNA that brings crRNA and CAS9 proteins together for viral defense O It is a miRNA that regulates the transcription of target genes by recruiting chromatin the chromatin modification complexes LSD1 and PRC2 It is an SIRNA that regulates the transcription of target genes by repressing their translation by targeting them for degradation O It is a miRNA that regulates the transcription of target genes by repressing their translation It is an SIRNA that regulates the transcription of target genes by repressing their translation It is a miRNA that regulates the transcription of target genes by repressing their translation by targeting them for degradation

Q: What would be the likely phenotypic effect of a mutation in HOTAIR and prevented it from binding to…

A: HOTAIR (HOX antisense intergenic RNA) is a long non-coding RNAs with 6 exons and 2158 nucleotides…

Q: Escherichia coli is grown in the presence of 20 mg of glucose and 20mg of lactose as carbon sources.…

A: Diauxic growth is the two phasic growth of bacteria as two different carbon source is present. As…

Q: Which of the following statements correctly describes the structure of chromatin around the promoter…

A: Chromatin is a complex of DNA and protein found in eukaryotic cells.

Q: During the process of bacterial transcription initiation, an open complex is formed involving the…

A: In the nucleus, transcription takes occur. It makes an RNA (mRNA) molecule using DNA as a template.…

Q: Which of the following statements is FALSE regarding Enhancers? O Enhancers are sometimes found in…

A: As the word suggests enhancers are used for enhancing. Enhancers are segments of DNA that are…

Q: Mutation in the operator that reduces the affinity of the operator for the repressor protein…

A: Lac operon is an inducible operon. When lactose is present in medium, then lac operon starts.

Q: Which of these statements best describes the major difference between enhancers and promoter…

A: Enhancer sections are regulator DNA regions that promote the transcription of a linked gene when…

Q: A protein binds a DNA sequence several hundred base pairs upstream of a promoter in a eukaryotic…

A: The correct option is Enhancers. Explanation: Enhancers are small segments of DNA (50–1500 bp) that…

Q: Which of the following is a method to reprogram a cell to de-differentiate fibroblast into a…

A: De-differentiation of fibroblast cells into pluripotent stem cells.

Q: Ascll is an activating transcription factor containing a DNA binding domain and an activation…

A: Some transcription factors bind to a DNA promoter sequence near the transcription start site and…

Q: Regulation of transcription is mediated by proteins that first must bind to specific…

A: Hi dear,here is your answer. Gene expression is defined as the process by which the information that…

Q: sRNA acts as a marker, flagging the inhibitory protein for ubiquitination and allowing translation…

A: Proteins are synthesized by the process of translation and are modified after post-translational…

Q: Which of the following is true about the HesC gene? Choose all possible answe a) repressed by the…

A: Hematopoietic Stem Cells (HSCs) are the main cells inside the hematopoietic system that have the…

Q: to that in humans. The molecule that is most similar in function to the bicoid and the molecule that…

A: Introduction Transcription is a process in central dogma where the DNA strand is transcribed into a…

Q: There are two variants of the enhancer sequence found in people. One has the sequence CACTAAAG, and…

A: Regulatory sequences or elements are the DNA sequences that serve as a binding site for regulatory…

Q: Which of the following is the action of SnRNA (snurps)? a. Knocks out a portion of the gene b.…

A: snRNA (small nuclear RNA) is found in the snRNPs (snurps).

Q: The assembly of general transcription factors on eukaryotic promoters for RNA polymerase II begins…

A: Explanation: ​​​​​​See the image for better understanding:

Q: Enhancers are sequences that affect the initiation of the transcription of genes that are hundreds…

A: apart from the regular looping mechanism, enhancers are also capable of 3 more mechanisms that can…

Q: Q. Which of the following describes the role of acetylation during the chromatin remodeling that…

A: Euchromatin consists of genes that are ready to be transcribed and translated into protein,…

Q: Four terms and statements related to gene regulatlon Match the correct term to each of the four…

A: According to the question, four terms and statements are related to gene regulation in bacteria are…

Q: PrfA is a protein that serves as a global regulator of virulence genes in Listeria, a bacterium that…

A: The bacterium Listeria sp. is a pathogenic bacterium that is responsible for causing listeriosis.…

Q: How can transcription factors influence the transcription of DNA? Select all that apply. Inhibit…

A: transcription factor is a protein that controls the rate of transcription of genetic information…

Q: Which promoter initiates which life cycle (lysogenic & Lytic)? Mention both types of promoters and…

A: Viruses reproduce by utilising a host cell to produce additional viruses, which subsequently burst…

Q: c) You use chromatin immunoprecipitation to measure the location and amount of transcription factors…

A: Transcription factors are protein molecules which bind to specific DNA sequences to regulate gene…

Q: A mutation in the trp repressor gene that prevents the apo-repressor from binding the co-repressor…

A: Tryptophan operon Tryptophan operon is negatively regulated operon, it includes five gene, promotor,…

Q: How would you use a ChIP (chromatin immunoprecipitation) to show that when RNA pol II is bound at…

A: Chromatin immunoprecipitation is a technique used for the investigation of DNA (deoxyribonucleic…

Q: Which of the following statements is/are true about gene regulation in bacteria? Choose all that…

A: Gene regulation refers to the mechanisms that act to induce or repress the expression of a gene. It…

Q: A particular mutation in the bacterial sigma factor allows this protein to bind RNA polymerase but…

A: Answer - Option A - It will prevent the transcription termination exerted by the Rho protein

Q: An enhancer, located upstream from a gene, has the following sequence: 5’-ACGA-3’…

A: answer given below..

Q: Which of the following is FALSE? Sigma domain 3.2 makes direct contact with the 5'-end of the…

A: Gre proteins of prokaryotes are transcription elongation factors that promote an endogenous…

Q: You are examining a set of genes from a phage that are transcribed late in infection. You know that…

A: Transcription: It is a process of synthesis of mRNA transcript from the double-stranded DNA as a…

Q: Which of the following lambda phage proteins is a transcription activator? Select one: Cl protein а.…

A: Biogeochemical processes, gene modification, and bacterial diversity are all dependent on…

Q: Two component systems are common in bacteria to regulate the expression of specific genes in…

A: A two-component regulatory system serves as a basic stimulus-response coupling mechanism to allow…

Q: Eukaryotic transcriptional repressors may act by   Choose an answer below competing for a binding…

A: Eukaryotic transcriptional repressor : These are the proteins which bind to the specific sites of…

Q: the above E. coli cell, with high glucose and low lactose levels, what happens at the operator?…

A: Lac operon is for lactose metabolism and transport in the cell. For example E coli lac operon , it…

Q: The DNA-binding proteins that recognize and accurately initiate transcription at specific eukaryotic…

A: * Response elements are short sequences of DNA within a gene promoter that bind specific…

Q: An enhancer, located upstream from a gene, has the following sequence:    5’-ACGA-3’…

A: In the field of molecular biology, an enhancer is referred to as the short (50–1500 bp) region of…

Q: In eukaryotes, chromatin remodeling plays an important role is gene regulation. This is because a.…

A: Chromatin remodeling is the non static change in the structure of chromatin which allows the…

Q: You were sequencing a region of 200 kb in Effrenium voratum (a member of the family Symbiodiniaceae)…

A: Insulators are the boundary elements that block the activating impact of distal enhancers.…

Q: The following diagram illustrates four genes from the genome of a certain insect. Different binding…

A: Enhancers are transcriptional activation factors that bind to the upstream region of the promoter…

Q: Transcription of protein-coding genes in the eukaryotic nucleus a. produces mature mRNAs. b. is…

A: TRANSCRIPTION:-  During the process of gene expression, DNA is first copied into an mRNA molecule…

Q: All may be RNA polymerase II promoter constituents EXCEPT:   response elements or GC box   a TATA…

A: Transcription is process where mRNA formed. a promoter is a sequence of DNA to which proteins…

Q: The lac operon is a negative inducible system and allolactose will bind to the regulator protein…

A: In normal state, the lac operon is generally turned off. A repressor protein during "off" stage,…

Q: A newly identified protein from the  cells of the Panopyra plant on Pandora was shown to inhibit…

A: Post-transcriptional regulation is an efficient way to regulate gene expression and that is used by…

Q: In bacteria, Which of the following mechanisms is the least probable in promoting antibiotic…

A: Antibiotic resistance  Antibiotic resistance bacteria are those which are able to survive in…

Q: Choose the item in column 2 that best matches each item in column 1. A. Provides information for…

A: core RNA polymerase - multi subunit enzyme composed of 5 subunits : 2α , β , β' and omega.  RNA…

Q: Which option best describes the correct order and correct protein function in converting a silenced…

A: Gene silencing occurs at the promoter region by DNA methylation. Usually cytosine and adenoid are…

Q: which of the following statements about the A pahge are TRUE, which ones are FALSE? Phage genes are…

A: Phage genes are repressed during the lysogenic state. Answer) False The phage has a temperate…

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.