Write the word TRUE if the statement is correct and if false, replace theunderlined words with the correct one.1. Heterochromatin is typically gene-rich and composed ofloosely-packed DNA that is transcriptionally active.2. Molecular switches regulate the expression of genes by directingwhere and when genes should be turned on or off depending on thecell signal.3. DNA Methylation and acetylation of histones are inverselycorrelated4. Specialized cells produce specialized proteins derived from luxurygenes which are constitutively expressed.5. In mammals, methylation patterns that regulate DNA structure andgene expression become evident from the gastrula stage.

“Since you have asked multiple question, we will solve the first question for you. If you want any…

Answered: 1. Heterochromatin is typically…

Science

Biology

1. Heterochromatin is typically gene-rich and composed of loosely-packed DNA that is transcriptionally active.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter16: Gene Expression

Section: Chapter Questions

Problem 39CTQ: New drugs are being developed that decrease DNA methylation and prevent the removal of acetyl groups...

See similar textbooks

Related questions

Q: If the DNA of chromosome 1 is fully extended, it will exceed the diameter of the nucleus of a cell…

A: DNA packaging is done in order to fit the linear DNA molecule inside the nucleus. Is starts when DNA…

Q: 2. The following double stranded segment of DNA is part of a protein coding gene. The segments in…

A: The genetic information of all living organisms (except some viruses) is stored in the cell in the…

Q: What are the forces that stabilizedouble stranded DNA?

A: As DNA is i double helix structure having 2 complimentary strands, it is necessary to maintain this…

Q: 3. During transcription: A. nucleotides are polymerized by DNA polymerase B. initiation occurs at a…

A: Transcription is the process of synthesis of RNA (mRNA, tRNA, rRNA) from the DNA which can further…

Q: 4. Assuming the translation product is an enzyme, explain its role in the final expression of a…

A: The genetic material of a cell, that is, the DNA (deoxyribonucleic acid) contain various genes that…

Q: 1. Since 1978, scientists used a specific biotechnology to produce a medicine used to treat…

A: Technology used: Recombinanant DNA. technology. The technology used to make DNA from…

Q: 6.) How does RNAi maintain the heterochromatin at the centromeres of chromosomes?

A: Heterochromatin is a form of DNA (deoxyribonucleic acid) that is dense or closely packed. It varies…

Q: What is the nature of genetic mutation of DNA repair proteins?

A: DNA repair is the process that repairs the lesions that occur in the DNA during replication and…

Q: 13. What is the complimentary sequence of the following strand? CCCCTTAGGAACC? a. CCCCTTAGGAACC b.…

A: Nucleic acids are biopolymers formed of repeating units of monomers called nucleotides. There are…

Q: 1. What are the differences between DNA and RNA? 2. Which process involves copying of DNA…

A: Note :- Since you have asked multiple questions im only answering the ist 3 as per bartleby…

Q: 1. What is the concept of universality of the genetic code? What are the exceptions to this…

A: Introduction The sequence of nucleotides on m-RNA that code for an amino acid is known as genetic…

Q: 1. Why is it that every cell needs to contain the DNA for the entire body when only a few of its…

A: DNA holds all of an organism's directions for growth, survival, and reproduction. DNA sequences…

Q: 9. In eukaryotic gene expression, non-coding RNAS such as miRNA (microRNA important role in gene…

A: Ribonucleic acid is a nucleic acid found in all living organisms. The term "RNA interference" refers…

Q: The functions ascribed to the genetic material are replication, expression, storage, and mutation.…

A: Genetics is a branch of the biology involved in the study of genes, genetic variation, and heredity…

Q: 1. From standpoint of replication and transcription, explain how RNA polymerase is allowed to…

A: Replication is the process of formation of two identical DNA copies from one parent DNA.For this…

Q: What codons are found in the mRNA for the two mutated DNA

A: 1. The cell reads the sequence of the gene in groups of three bases. There are 64 different codons:…

Q: 1. Describe at least four ways in which transcription is different from DNA replication.

A: As per our company's guidelines we are supposed to answer a single question at a time only. Please…

Q: Why aren't ssb proteins necessary in transcription?

A: The function of SSB protein is to prevent the recoiling of parent strands during replication. As we…

Q: The conversion of euchromatin into heterochromatin involvesa. the formation of more nucleosomes.b.…

A: Chromatin is eukaryotes is the packaged form of DNA. DNA is packaged into coils with the help of…

Q: 1. Which pieces of DNA are the most informative? Why?

A: as per our company guidelines we are supposed to answer only first 1question. Kindly repost other…

Q: Methylated cytosines

A: Answer:

Q: 4. Why do the dideoxynucleotides stop DNA extension?

A: The sequences of nucleotides on the DNA strand (dNTPs) constitute the genetic code or genome. The…

Q: b) For a DNA strand with the given genetic code of bases , undergoing transcription, what will be…

A: The central dogma of molecular biology is the synthesis of mRNA and polypeptide chain by…

Q: the two factors that bind directly to the DNA at specific sequences are TFID and TFIIB, in genreal…

A: Transcription is the process by which the information in a strand of DNA is copied into a new…

Q: Why is the TP53 called the guardian of the genome?

A: Genome The genome of an organism consist of whole genetic material. The both part of gene coding…

Q: Chromatin is differentiated into heterochromatin and euchromatin regions, on the basis of staining…

A: Answer: Introduction: Some proteins are dense chromosomal DNA into the microscopic gap of the…

Q: 24. Where in the DNA of a chromosome would you most likely find nucleosome-free regions (NFRS)? a.…

A: Nucleosome-free region (NFRs) at the 5′ and 3′ ends of genes are common locations for mRNA and…

Q: What codons ar e found in the mRNA for the two mutated DNA?

A: Answer 1: - There are 14 codons in the original DNA sequence. Answer 2:- Similarly, there are 14…

Q: 5. During eukaryotic transcription, the molecule that is formed is a. complementary to both strands…

A: the molecule that is formed during eukaryotic transcription is RNA the molecule will be…

Q: discuss the possible interaction of transplatin with DNA

A: The stereoisomer of cisplatin is transplatin. Its chemical name is trans-diamminedichloroplatinum…

Q: 1. What is meant by the term ‘redundancy’ in the context of the genetic code? b) What are the…

A: Answer: DNA sequence is the sequence of nucleic bases arranged in an order which can able to read…

Q: What is the role of Ligase in DNA replication?

A: DNA is the genetic material present in the nucleus.

Q: 48. The nuclear membrane is still intact to protect the DNA molecules from undergoing mutation A.…

A: Introduction Cell division:- It is the process by which cells divide and increase in number to…

Q: 6) There is clear evidence that chromatin state is directly related to the ability of proteins to…

A: The chromosomes appear as a mass of greatly fine tangled string called "chromatin." Chromatin is…

Q: Histone _______ is not part of the histone octamer, but binds to linker DNA and is responsible for…

A: Histones are a family of basic proteins that associate with DNA in the nucleus and help condense it…

Q: Unlike bacterial cells, the nucleus of a eukaryotic cell is bounded by a double-layered membrane…

A: Cells are the most fundamental and essential unit of life in all living things. All of life's…

Q: 3. What is meant by the term histone code? With regard to gene regulation, what is the proposed role…

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Q: What is the main difference in the behavior of DNA and RNA polymerases?

A: Both DNA polymerases and RNA polymerases are enzymes.DNA polymerases are mainly involved during the…

Q: Why is it that every cell needs to contain the DNA for the entire body when only a few of its genes…

A: Aside from red blood cells and cornified cells, all other cells in the human body contain nuclear…

Q: 1. In adults, these DNA regions would contain the genes for hemoglobin. a. euchromatin b.…

A: Chromatin can be defined as a complex threadlike structure made up of DNA and proteins found in…

Q: The process of attaching biological functions to DNA sequences is called?

A: DNA is present inside the nucleus.

Q: 4. Given the following problems in bacterial DNA replication, identify the defective enzyme or…

A: In bacterial DNA replication is mainly carried out by DNA polymerase that synthesize the new strand…

Q: 6. What are the similarities and differences between the transcription process and the replication…

A: Replication A biological process of in which two identical copies of DNA are produced.

Q: 3.explain why the following statement is false. "Interaction of specific transcription factors and…

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

Q: 2. In your own words, define a gene.

A: A protein is a biomolecule that is made up of amino acids. They carry out many cellular processes as…

Q: 1) Transcription and translation both involve an initiation, elongation, and termination phase.…

A: A gene is the essential physical and functional unit of heredity. Genes are comprised of DNA. A…

Q: 8. Which of the following is NOT an example of an epigenetic mechanism? A) DNA methylation B)…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 4.) what is the amino acid chain that your answer in item 2 will dictate? Question in Item 2: The…

A: Given, Question in Item 2: The complementary strand from item 1 undergoes transcription. What will…

Concept explainers

Genome annotation

The technique of linking biological information to genome sequences is termed genome annotation. Gene annotation is the method of identifying gene locations and coding sections. It helps us understand what these genes are doing in the body through establishing structural characteristics and linking them to the actions of various proteins.

Question

Write the word TRUE if the statement is correct and if false, replace the
underlined words with the correct one.
1. Heterochromatin is typically gene-rich and composed of
loosely-packed DNA that is transcriptionally active.
2. Molecular switches regulate the expression of genes by directing
where and when genes should be turned on or off depending on the
cell signal.
3. DNA Methylation and acetylation of histones are inverselycorrelated
4. Specialized cells produce specialized proteins derived from luxury
genes which are constitutively expressed.
5. In mammals, methylation patterns that regulate DNA structure and
gene expression become evident from the gastrula stage.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.

Similar questions

1a. Provide a paper published in a scientific journal between January 2018 and September 2022 that addresses the role of an example of histone modification in affecting expression of a gene by altering histone acetylation/chromatin state of the DNA encoding that gene.
If histones are acetylated on a lysine amino acid (an epigenomic mark), are genes in this region likely to be expressed or not? Briefly, in a sentence or two, explain your answer. (Hint: In your answer explain what the DNA and chromatin structure would look like in regions with the acetylation compared to regions without).
A cell is homozygous for a LOF mutation in the histone acetyltransferase (HAT) gene. Which of the following is/are true? a. Chromatin in the cell will be more condensed than usual, decreasing expression of genes that should be expressed. b. This will lead to histones with more positive charges on their tails, increasing the interaction between histones and the DNA backbone. c. This will lead to a decrease in DNA methylation and therefore cause an increase in gene expression. d. Chromatin in the cell will be less condensed than usual, increasing expression of genes that should not be expressed.
What are histone proteins, and how are their DNA binding properties regulated. Indicate if there are any modification(s) that comes on and off that regulates how tightly or loosely the Histone proteins are bound to DNA.
Give typing answer with explanation and conclusion Which of the following regions of DNA would you expect to be transcribed. Select all the apply. Marks removed for incorrect selection(s) O a. Enhancer O b. 3' UTR O c. 5' UTR O d. Promoter
David Seligson and his colleagues examined levels of histone proteinmodification in prostate tumors and their association with clinicaloutcomes (D. B. Seligson et al. 2005. Nature 435:1262–1266). Theyused antibodies to stain for acetylation at three different sites and formethylation at two different sites on histone proteins. They found that the degree of histone acetylation and methylation helped predict whetherprostate cancer would return within 10 years in the patients who had aprostate tumor removed. Explain how acetylation and methylation mightbe associated with tumor recurrence in prostate cancer.
Which is the expected outcome following the deacetylation of histones? a) Coiling of chromatin, preventing it from being accessed by transcriptional machinery b) Coiling of chromatin, allowing it to be accessed by transcriptional machinery c) Uncoiling of chromatin, preventing it from being accessed by transcriptional machinery d) Uncoiling of chromatin, allowing it to be accessed by transcriptional machinery
Which of these is NOT true of nucleosomes? A. Some post-translational modifications to histone proteins serve as binding sites for transcription factors. B. The position of nucleosomes is fixed on the genome and can not be changed. C. The position and post-translational modifications of histones can be inherited through mitosis. D. The binding between DNA and histone proteins can be disrupted by post-translational modifications.
Can you please help with 1a,1b, and 1c please 1a. Find a paper published in a scientific journal between January 2018 and September 2022 that addresses the role of an example of histone modification in affecting expression of a gene by altering histone acetylation/chromatin state of the DNA encoding that gene. What organism and/or cell type did the authors do their study in? 1b. Which histone(s) were affected by the acetylation and/or deacetylation? What gene did they show had altered expression levels in response to the change in histone acetylation? 1c. what effect did the histone modification they studied have on that gene's level of expression - was expression of the gene they examined increased or decreased?
The retinoblastoma tumor suppressor gene Rb (RB1) codes forthe retinoblastoma protein (pRB). pRB prevents the progression of the cell cycle through G1 if DNA has been damaged. Itdoes so in part because it binds a transcription-activatingdimer referred to as E2F-DP. The pRB-E2F/DP complex recruits a histone deacetylase to chromatin. Explain.
Cell (A) contains 3.1 billion (3.1 x 109) base pairs of DNA. Each nucleosome has about 200 bp of DNAwrapped around the histone core.a. What is the maximum number of nucleosomes that can be present in the cell?b. What is the maximum number of H2A histone protein molecules that can be present in the cell?
Heterochromatin consists of a) region of euchromatin devoid of histones. b) an AT-rich region occurs every 200 base pairs. c) decondensed, transcriptionally active chromatin. d) highly condensed, transcriptionally inactive chromatin