Describe nucleosome supercoiling and its relationship to the radial loop–scaffold model of chromatin packaging.

Q: True/False: RNA polymerase II, with the help of general transcription factors alone, can transcribe…

A: Transcription is a fundamental process in molecular biology by which genetic information encoded in…

Q: The genetic change that enables a flu strain to jump from one animal species to another, including…

A: Influenza flu viruses are known for their continuously mutating ability. The mutations could be…

Q: Define chromatin-mediated repression.

A: Histone is the basic protein abundant in lysine and arginine residues, which are located in the…

Q: Describe chromatin when the CpG islands are methylated?

A: The eukaryotic chromosome is made of half DNA and half proteins. Out of total proteins, one half is…

Q: Explain the following terms: Non-histone Chromosomal (NHC) proteins, euchromatin &…

A: Chromatin is a complex of DNA and protein found in eukaryotic cells. The primary function of…

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: What functions does supercoiling serve for the cell?

A: Supercoiling refers to a double helix of DNA that has undergone additional twisting in the same…

Q: Define facultative heterochromatin

A: Introduction  Heterochromatin: it is highly condensed region of the chromatin which remains…

Q: Which of the following statements is NOT true about chromatin architecture? A. The histone tails on…

A: The DNA is the genetic material of the cell which is responsible for the functions a cell performs.…

Q: Which of the following statements most accurately represent chromatin state and transcription?

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

Q: What chemical and structural properties of histones enable them to successfully package eukaryotic…

A: Histones are basic proteins found in eukaryotic cells that associate with DNA by packaging the DNA…

Q: In chemotherapy, what are the mechanism of action of cisplatin and alkylating agents.  Why are these…

A: Chemotherapy is a medication treatment that employs the use of potent chemicals to kill rapidly…

Q: Does chromatin compaction increase or decrease as DNA methylation increases?

A: DNA methylation favours the heterochromatin state and reduces overall DNA flexibility while…

Q: You have discovered a new species of plant. You isolate chromatin from the plant and examines it…

A: Histones are basic proteins that are rich in basic amino acids like arginine and lysine. These basic…

Q: Match the type of chromatin modification with the most likely effect on gene expression near the…

A: DNA and histone proteins, which are essential elements of the chromatin structure, are chemically…

Q: What are different types of modifications seen on histones in heterochromatin and euchromatin and…

A: Histones are specialized proteins around which DNA wraps and forms a structure known as the…

Q: Euchromatin is said to be transcriptionally-active while Heterochromatin is said to be…

A: Euchromatin exists in decondensed form and is found in the distal arms of the chromosome. It is…

Q: How do chromatin modifications regulate transcription?

A: Chromatin is a complex of protein and DNA, present in eukaryotic cells. Its main function is to pack…

Q: scribe how the acetylation of core histones may loosen chromatin packing.

A: DNA is the genetic material is usually found in all prokaryotic and eukaryotic cells. DNA is made up…

Q: Describe the action of telomerase and identify the celltypes in which it continues to be…

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of…

Q: Eukaryotic life also uses chromatin modifications to turn transcripts on and off. We talked about…

A: Chromosomes are the thread-like structures that consists of DNA in tightly packed manner within the…

Q: Which of the following is NOT an effect of histone acetylation on chromatin structure? Selected…

A: Histone acetylation is a post-translational modification that adds acetyl groups to lysine residues…

Q: Describe the structure of nucleosomes and the 30-nm fiber, andexplain how the 30-nm fiber forms…

A: Genetics is a part of science worried about the investigation of genes, genetic variety, and…

Q: Would you expect to find active genes in regions of heterochromatin or euchromatin

A: DNA is the genetic material of all organisms except some viruses. The DNA  are double stranded…

Q: What does the statement above mean

A:

Q: Which of the following is likely to be transcriptionally expressed?     euchromatin and DNA with…

A: Introduction: Two main stages are there at which gene is expressed: transcription and translation.…

Q: What is chromatin remodeling complex?

A: The complex of proteins and DNA in eukaryotic cells is called chromatin. This is the packed or…

Q: Is heterochromatin transcriptionally active?

A: Deoxyribonucleic acid (DNA) is the genetic material made up of nitrogenous bases, pentose sugars,…

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: What is the purpose of heterochromatin and does heterochromatin transcribed?

A: Heterochromatin is a condensed or tightly packed form of DNA that comes in multiple varieties. These…

Q: Outline the structures of nucleosomes, the 30-nm fiber, andradial loop domains

A: The chromosome is the compactly packed form of DNA that has undergone many twists and turns to get a…