. Dosage compensation is necessary because a. some regions of the genome contain more genes than others.b. genes near heterochromatin tend to be silenced. c. enhancers can activate transcription whether they are upstream or downstream of a gene. d. genes on the X chromosome have twice as many copies in females as in males

Q: 10.

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

Q: Which of the following mutations could be appropriately describedas a position effect?A. A point…

A: The mutation is caused due to alteration occurred in the gene sequence due to either environmental…

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: What epigenetic modification(s) would you expect to see near a gene promoter where transcription is…

A: The histones undergo methylation and acetylation for close and loose packaging of the DNA. The…

Q: Glenn Croston and his colleagues studied the relation between chromatin structure and transcription…

A: Glenn Croston with his colleagues measured the level of invitro transcription of the gene in a…

Q: A chromatin-remodeling complex may a. change the locations of nucleosomes. b. evict nucleosomes from…

A: Nucleosome is the packaging unit in eukaryotes. It is a fundamental subunit of chromatin.…

Q: Transcriptional activation of eukaryotic genes involves which of the following events? a. Changes in…

A: Nucleosome is the packaging unit in eukaryotes. It is a fundamental subunit of chromatin.…

Q: Mutations in genes encoding chromatin-remodeling complexes have been identified in high frequencies…

A: A mutation is a change that occurs in the deoxyribonucleic acid (DNA)when it is damaged or changed…

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: A genon wide analyst of human genome indicated that approximately 1500 genes encoded transcription…

A: Transcription factors These are proteins that are involved in the process of transcribing the…

Q: Which of the following could represent an epigenetic modification in a cell?   A. Deletion of…

A: Epigenetic changes are modifications to DNA that regulate whether genes are turned on or off. These…

Q: Suppose expression of gene A is limited to the middle part of the early mouse embryo. Expression of…

A: Gene expression includes transcription followed by the translation of the newly generated mRNA…

Q: A researchist has found that 1 human promoter is responsible for producing 2various proteins…

A: The information carried by our genome in the form of DNA goes through a number of processes before…

Q: Combinatorial control refers to the phenomenon that a. transcription factors always combine with…

A: Among the given options, option(b) is the most appropriate."Combinatorial control refers to the…

Q: Which of the following are examples of molecular changes thatcan have an epigenetic effect on gene…

A: Epigenetic effects are such changes that bring about changes in the phenotypic expression of a gene…

Q: Master regulatory genes play critical roles in development. Predict the MOST likely fate of a fly…

A: Regulator genes as the name suggest help in controlling the expression of other genes, all genes are…

Q: Which of the following is true of CpG islands? a. They are methylated near promoters of actively…

A: Deoxyribonucleic acid is a molecule composed of two polynucleotide chains. It coils around each…

Q: Which of the following is true?   a.     Enhancers are proteins that bind to activator DNA…

A: An enhancer is a brief piece of DNA (50–1500 bp) in genetics that can bind to proteins (activators)…

Q: 1. Which of the following ensures that most genes on one X chromosome are not expressed in female…

A: Female cells have two X chromosomes while males have one X and one Y. This means females have twice…

Q: In the table below the product of gene R binds to the promoter of gene A. What happens in (b)? a.…

A: Positive regulators are structural components that allow RNA polymerase to attach to the promoter…

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: 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: What molecular genetic method(s) or approaches would you use to test whether a transcription factor…

A: Transcription refers to the molecular process by which a cell synthesizes RNA from its genetic…

Q: The reason LacZ is frequently used as a reporter gene is: a. The lacZ gene product binds to the…

A: LacZ is a gene of lac operon which codes for β-galactosidase. The reporter genes cause a visible…

Q: Which of the following does not accurately describe eukaryotic transcriptional factors? a. Changes…

A: Introduction Transcription factors are the proteins that specifically are involved in the…

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: Your investors are concerned that the GasP protein might not be sufficiently produced under normal…

A: Answer a. As the transcription of GasP protein has been 'triggered' by some chemical (abiotic…

Q: Which of the following statements about methylation and acetylation is correct? A. Genes that have…

A: Introduction Deacetylation is the removal of an acetyl group and occurs on a plethora of targets and…

Q: Eukaryotes can control transcription by three overall type of process, they are ( selection from…

A: The regulation of transcription is more complex in eukaryotes as compared to prokaryotes. This…