Which of the following is likely to be transcriptionally expressed? euchromatin and DNA with methyl groups euchromatin DNA with methyl groups DNA with acetylated histones euchromatin and DNA with acetylated histones
Q: Nucleosomes are the ball-like structures around which the double helix winds. What proteins make up…
A:
Q: Some animals like C. elegans, do not have 5-methylcytosine, but do have methylated adenine. It is…
A: DNA methylation is known as epigenetic mechanism. It occurs when a methyl group is added to DNA and…
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: Which of the following DNA types forms the nucleolar organizer (nucleolus)? centromeric…
A: 1. Centromeric heterochromatin: it is the part of the chromatin that is transcriptionally inactive…
Q: Describe what structural changes convert a chromosomal region that is 300 nm in diameter to one that…
A: Chromosomes are thread-like structures that are located in the nucleus. It is composed of protein…
Q: What is a puff on a polytene chromosome? a highly condensed region of DNA a region containing the…
A: Polytene chromosomes are found in the salivary glands of the insect like in Drosophila and other…
Q: Which of the following best describes what is able to influence the level of eukaryotic DNA…
A: Eukaryotic DNA remain associated with histone proteins that forms nucleosome and expression of genes…
Q: 6. This is where the RNA polymerase is bound and a short region of DNA is accessible to begin the…
A: In bacteria,The RNA poltmerase enzyme binds and unwinds promoter DNA and open promoter complex form…
Q: .what Human diseases that result from variations in multiple genes?
A: NOTE- As per our honor code, we are authorized to answer only one question at a moment. As you have…
Q: Kree DNA has histone like proteins that wrap up in nucleosomes. The Kree have a core DNA length of…
A: Nucleosomes are the basic repeating unit of 'beads on a string' structure of eukaryotic chromosome.…
Q: An article entitled “Nucleosome Positioning at the Replication Fork” states: “both the ‘old’…
A: The DNA upstream of the replication fork that is nucleosome-free aids in facilitating the DNA DNA…
Q: Much of DNA methylation in eukaryotes occurs at CpG dinucleotides, but some individual cytosine…
A: The most common epigenetic change is methylation in which a methyl group is added to the DNA…
Q: Compared to heterochromatin, euchromatin is O comprised of densely packed nucleosomes and with…
A: Heterochromatin is characterized as the region of the chromosome which is obscurely darkled stained…
Q: Which structure in the eukaryotic chromosome is about 11 nm in diameter, contains 8 histone proteins…
A: In eukaryotes, all of the cell's chromosomes are stored inside a structure called the nucleus. Each…
Q: A plant geneticist was examining the inversion mutation XI 501 in barley where a segment of DNA is…
A: Any alteration occurring in the DNA sequence of an organism is known as mutation.
Q: How does histone acetylation change chromatin structure? Group of answer choices 1. Histones lose…
A: Chromosomes are the condensed form of the chromatins. It contains DNA that contains histone proteins…
Q: Enzymes that acetylate the ε-amino group of lysine in the histone tails are called ____ and are…
A: Histones are protein molecules present in nucleosome core of the chromatin material around the…
Q: Histone proteins contain tail amino acids that are positively charged. Which of the following…
A: DNA is a helical structure that carries the genes or the hereditary units of life. DNA is a…
Q: Eukaryotes such as humans have linear chromosomes. In order to signal the end of DNA replication,…
A: Telomere is a stretch of repeating DNA sequences that is found at the end of each chromosome.…
Q: 1.This is where the RNA polymerase is bound and a short region of DNA is accessible to begin the…
A: This is where the RNA polymerase is bound and a short region of DNA is accessible to begin the…
Q: In studies on chromatin it has been reported that DNA that is being actively transcribed is more…
A: DNA- “deoxyribonucleic acid” is a complex structure that carries the unique genetic code of every…
Q: Euchromatin refers to regions of DNA that are loosely packed to increase the efficiency of…
A: The nucleus of the cell contains DNA. DNA is the basic hereditary material of an organism. The DNA…
Q: Name the 5 types of histones, Which form the nucleosome core and which histone holds the nucleosome…
A: Histones are protein biomolecules that are responsible for stabilizing and condensing the DNA of…
Q: Epigenetic changes in gene regulation are caused by ________. missing nucleotides or chromosomes…
A: Epigenetic Epigenetic is a reversible change in the DNA which controls the expression of genes.
Q: Epigenetic changes in chromatin remodelling which selectively PREVENTS transcription Acetylation…
A: DNA is the store house of genetic information. This genetic information is expressed as protein…
Q: There are five major types of histones in eukaryotic cells. One of these is not part of the…
A: The nucleosome is the fundamental subunit of chromatin. The nucleosome is composed of two turns of…
Q: 1)A. how do you read a sequence of DNA (template or non-template strand) to convert it an mRNA…
A: *NOTE: Kindly repost for other questions. Dear Student as per the guidelines we are supposed to…
Q: Histone methylation alters the chromatin structure with varied effects depending on the specific…
A: Chemical modification of all histone proteins occurs. The modification that occurs at histone…
Q: Which one of the following statements about nucleosomes is false? a) The DNA double helix wraps…
A: Introduction Nucleosomes are eukaryotic chromatin's basic repeating structural units, comprised of…
Q: The nucleosomal core in eukaryotes consists of all of the following histone proteins except:…
A: NUCLEOSOMES It is a section of DNA that is wrapped around a core of proteins termed as Histone…
Q: Which of the following make up a core nucleosome structure? A) about 147 bp of DNA D) A tetramer…
A: INTRODUCTION- Chromosome is made up of histone proteins. These proteins interact with the long DNA…
Q: In eukaryotic cells, the DNA is tightly packed in the form of chromatin. His- tones are positively…
A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…
Q: Histones form more accessible chromatin because of Select one: a. Reduced electrostatic attraction…
A: Eukaryotic DNA remain associated with histone proteins and from nucleosome model. It is the…
Q: Define the following terms:a. histonesb. heterochromatinc. euchromatind. intergenic sequencese.…
A: Ans: The terms given in the questions are all related to the genome of an eukaryotic organisms, they…
Q: asic amino acids including lysine. DNA and histones collectively form chromatin. Open open and…
A: Histones can be defined as the family of basic proteins that are associated with the DNA in the…
Q: What mechanisms are involved in polynucleotide folding which produces a stable molecule that can fit…
A: A gene is a sequence of DNAs that codes for RNAs with the help of regulatory elements. The RNA is…
Q: What would be the likely result of expressing telomerase in somatic cells? Immortality of gametes…
A: Telomerase is also known as telomere terminal transferase enzyme which is formed of RNA subunits and…
Q: Which of the following will lead to epigenetic gen O a. A decrease in histone deacetylation. O b. An…
A: Epigenetic changes occur due to environmental changes in the surrounding atmosphere. Enzymes are…
Q: If a section of a chromosome is heavily methylated, which of the following is likely to be true?…
A: DNA methylation is a process that is used during gene expression. There have many other options for…
Q: Possible genetic modifications that can cause epigenetic changes in gene expression include: A- all…
A: Before you are born, epigenetic alterations occur.Your cells all have the same genes, yet they look…
Q: ow does DNA methylation occur? What enzyme is involved in DNA methylation? What are the consequences…
A: Since you have multiple questions, am answering the first question for you, for the remaining…
Q: Histones are: Group of answer choices Are present in eukaryotic, but not prokaryotic chromosomes…
A: Introduction: In the packaging of DNA into the cell, the histones play a critical role. They order…
Q: If an organism's cells were to not want a specific sequence of DNA transcribed for a long period of…
A: The regulation of gene expression at the level of DNA and protein is known as DNA- protein…
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: 22. With which protein(s) is a condensed eukaryotic chromosome NOT known to be associated? 1. core…
A: Question - 22.With which protein(s) is a condensed eukaryotic chromosome NOT known to be associated?…
Q: Since eukaryotic chromosomes are assembled with histone proteins, how are replication and…
A: Eukaryotes are the organisms that contain a nuclear membrane covering the nucleus. But the…
Q: Which structure in the eukaryotic chromosome is about 700-840 nm in diameter, contains scaffold…
A: One solenoid is composed of 6 nucleosomes. It is defined as a packaging material of DNA and is a…
Q: Spliceosomes include all of the following EXCEPT enzymes catalyzing acetylation of histone…
A: Introduction: The splicing of RNA occurs by a large complex known as the spliceosome. It contains…
Q: Which structure in the eukaryotic chromosome is about 2 nm in diameter, contains no histone proteins…
A: Transcription is the cycle by which the data in a strand of DNA is duplicated into another molecule…
Which of the following is likely to be transcriptionally expressed?
|
euchromatin and DNA with methyl groups |
||
|
euchromatin |
||
|
DNA with methyl groups |
||
|
DNA with acetylated histones |
||
|
euchromatin and DNA with acetylated histones |
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Which of the following statements concerning eukaryotic chromatin is true. Histones have an overall negative charge. Euchromatin is more condensed then heterochromatin. After replication nucleosomes are made up of a mixture of old and new histone proteins. Euchromatin is associated with the centromere and telomere regions. Heterochromatin are regions of active transcription.Histones contain many basic amino acids including lysine. DNA and histones collectively form chromatin. Open chromatin is much more open and accessible to the transcriptional machinery than closed chromatin. Histone lysine acetylation is associated with open chromatin and occurs near genes that are being actively transcribed. Part A Given what you know about the chemical properties of DNA and the function of histones. whv do histones contain so many basic amino acids? Answer in no more than two sentences. Part B Given what you know about how acetylation affects lysine, why does histone lysine acetylation open chromatin? Answer in one sentence only.Typically, increased acetylation and decreased methylation of histone N-terminal tails in nucleosomes leads to removal of the protein components of the chromatin from the DNA relaxed packaging of the chromatin and increased transcription increased amounts of euchromatin relative to heterochromatin activation of topoisomerase tighter packaging of the chromatin and reduced transcription
- If a section of a chromosome is heavily methylated, which of the following is likely to be true? Group of answer choices That portion of the chromosome is transcriptionally active That portion of the chromosome consists of euchromatin That portion of the chromosome is transcriptionally quiet RNA polymerase will have easy access to the DNA in that regionHeterochromatin and Euchromatin Have Which Different Histone modificationsThe following image shows the 'beads-on-a-string' model of DNA and the effects of histone modification on chromatin structure. What effect does histone acetylation have on Gene 1? Gene 1 De-acetylation Acetylation Ac Ac Gene 1 Ac Ac Ac O Acetylation increases expression of Gene 1 O Acetylation decreases expression of Gene 1 O Acetylation causes a mutation in Gene 1 O There is no way to tell from this figure
- Eukaryotic Genetic Sequence: 5'-TAC CAT GAT CCC TAT - 3' 1. What would be the newly synthesized DNA strand and explain how the strand will be replicated. Where in the cell would this occur? 2. What would be the synthesized mRNA strand, and how is it transcribed from the original DNA strand, and then converted from a pre-mRNA strand to a mature mRNA? Where in the cell does this occur? 3. What would be the anti-codons for the tRNA. What are the amino acids generated based on the RNA. How are these amino acids translated into protein and where in the cell does this happen?Compared to heterochromatin, euchromatin is comprised of densely packed nucleosomes and with higher transcription activity comprised of densely packed nucleosomes and with lower transcription activity O comprised of loosely packed nucleosomes and with lower transcription activity Ocomprised of loosely packed nucleosomes and with higher transcription activityDiscuss the levels of chromosomal organization with reference to the following terms: a. nucleotide b. DNA double helix c. histones d. nucleosomes e. chromatin
- In studies on chromatin it has been reported that DNA that is being actively transcribed is more sensitive to digestion by DNase I. Which of the following events is known to make DNA more sensitive to digestion by DNase I? Formation of heterochromatin DNA methylation All of the provided answers are correct. Acetylation of histone O Deacetylation of histoneYou have discovered a new species of plant. You isolate chromatin from the plant and examines it with the electron microscope and see characteristic beads on a string structure. After addition of a small amount of nuclease, which cleaves the string into individual beads that each contain 280 bp of DNA. With more digestion a 120-bp fragment of DNA remains attached to a core of histone protein. Analysis of the histone core reveals histones in the following proportions: H2A 33.3% H2B 33.3% H3 0% [no histone H3 found] H4 33.3% Based on these observations, what conclusions can you make about the probable structure of the nucleosome in the chromatin of this plant? Be specific in describing the nature of the nucleosome: which histones form the core (), how many of each are present () and size in bp of core-DNA that envelopes it ().Which one of the following statements is NOT true of histones? O They are involved in the packaging of eukaryotic chromatin. O They are highly conserved. O They are positively charged. They contain high amounts of arginine and lysine. O DNA double-wraps around seven histone proteins.