25) Which of the following statements is false about epigenetics? The environment or a behavior A) results in a change in the DNA sequence B) results in a differential gene expression C) can cause chromatin to remain coiled when it would normally unwind UNA exD) can result in repressor proteins that disrupt DNA expression Choose the letter of the answer (below) that best matches the description for questions 26-29. 26) CRISPR (clustered regularly interspaced short palindromic repeats)-CAS9 27) DNA microarray

25) Which of the following statements is false about epigenetics? The environment or a behavior A) results in a change in the DNA sequence B) results in a differential gene expression C) can cause chromatin to remain coiled when it would normally unwind UNA exD) can result in repressor proteins that disrupt DNA expression Choose the letter of the answer (below) that best matches the description for questions 26-29. 26) CRISPR (clustered regularly interspaced short palindromic repeats)-CAS9 27) DNA microarray

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

See similar textbooks

Similar questions

Which of the following is least related to the other items? Group of answer choices inducer repressor operator enhancers 2. A scientist observing a cell during gene expression would be able to easily distinguish it as a prokaryotic cell by which of the following observations? Group of answer choices as soon as the DNA introns are removed from the template after the 5' caps are converted to mRNA after a transcription initiation complex has been formed during transcription once the pre-mRNA has been converted to mRNA
. You are interested in a eukaryotic protein involved in immunity, and you are attempting to express this protein in E. coli in order to produce large amounts of the protein. You have identified the gene and place a copy of the gene on a plasmid in E. coli next to a bacterial promoter sequence. You determine that lots of mRNA is made from your gene in your E. coli system, but the protein produced is larger and doesn't have the same properties as the eukaryotic protein you expected. What mistake have you made and how can you fix it?
You are a genetic engineer that is working on transcriptional regulation in living organisms. In addition to your day job, you are a video game connoisseur and are designing a cell phone game where participants design the features of an organism that is the best at up-regulating transcription of a gene, WINNING. Participants are able to pick from a variety of organisms, cis regions, trans factors and a variety of enzymes. You want to set the high score on the leader board so you play the game and design the following features into your organism. - You need to describe ALL the features you will be including into your organism as well as what organism you picked for your entry. You need to include all the components of transcription, key features of transcriptional regulation and other features that will increase transcription to the highest level. You need to explain why you included every feature and how each will contribute to increased gene expression. Be creative and error on the…
How do I draw the sequence and explain the process for each step? Draw the sequence of molecular events that occurs to induce STAT transcription factor localization to the nucleus. To complete this, you will draw the first step that occurs, then draw a new figure with the second step that occurs, then draw a new figure with the third step that occurs, and so on until you have completed all of the steps. On the drawing, briefly label each molecular event (each drawing). For this brief label, explain what is happening during each step.
How do you think that transcription randomizes positions of nucleosomes and repression restores the ordering after transcription? How might you test to see if there was an exchange of histone subunits during transcription or if the nucleosome is truly transferred as a single unit? Would you expect the DNA band representing the distance from the restriction enzyme site to the hypersensitive site to be a single band or a smear? Defend your answer.
Transformation is a process in which bacteria take up new DNA released by dead cells and integrate it into their own genomes (see p. 265 in Chapter 9). In Streptococcus pneumoniae (which causes many cases of pneumonia, inner-ear infections, and meningitis), the ability to carry out transformation requires from 105 to 124 genes, collectively termed the com regulon. The com regulon is activated in response to a protein called competence-stimulating peptide (CSP), which is produced by the bacteria and exported into the surrounding medium. When enough CSP accumulates, it attaches to a receptor on the bacterial cell membrane, which then activates a regulator protein that stimulates the transcription of genes within the com regulon and sets in motion a series of reactions that ultimately result in transformation. Does the com regulon in Streptococcus pneumoniae exhibit positive or negative control? Explain your answer.
As we described in class, in the early 1960's Francis Crick and colleagues set out to determine how many nucleotide bases make up a codon, before it was possible to sequence DNA and before Nirenberg and his colleagues solved the genetic code. To do this, they used a chemical mutagen that they knew made single nucleotide changes, used this mutagen to conduct a screen for mutations that disrupted a particular gene, and collected a number of different mutations in this gene. Briefly describe the logic they used to deduce that the codon length is 3 nucleotides long.
Based on one strand of a certain segment of DNA with the sequence below, answer the following question: 3’-ATGGATCCCATC-5’ What must the primary amino acid sequence be (assuming that the above sequence does not require post-transcriptional modification)?
According to the scenario shown, how many segments of DNA (one, two, or three) are removed during site-specific recombination within the gene that encodes the κ (kappa) light chain for IgG proteins? How many segments are spliced out of the pre-mRNA?
You are interested in a eukaryotic protein involved in immunity, and you are attempting to express this protein in E. coli in order to produce large amounts of the protein. You take your DNA construct and place it into E. coli. You measure protein expression and notice that no protein is being made. Provide 1 reason why you don't see protein as it relates to transcription and how this problem could be resolved.
What effect would inhibitors of histone deacetylases have upon transcription? Group of answer choices They would increase transcription by making the chromatin more compact They would increase transcription by making the chromatin less compact They would decrease transcription by making the chromatin more compact They would decrease transcription by making the chromatin less compact For this question, we will consider a eukaryotic mRNA that has four exons (E1, E2, E3, E4) and three introns (I1, I2, I3). What could occur if a protein were to bind over the 3' splice site of intron 2 (I2)? Group of answer choices The processed mRNA would consist of: E1+E2+E3+E4 The processed mRNA would consist only of: E1+E3 The processed mRNA would consist only of: E3+E4 The processed mRNA would consist of: E1+E2+E4
Why is TBP considered to be a universal transcription factor?