1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
11111nata11111 [884]
3 years ago
12

Which statements about the modification of chromatin structure in eukaryotes are true? Select all that apply. View Available Hin

t(s) Select all that apply. Deacetylation of histone tails in chromatin loosens the association between nucleosomes and DNA. Methylation of histone tails in chromatin can promote condensation of the chromatin. DNA is not transcribed when chromatin is packaged tightly in a condensed form. Acetylation of histone tails is a reversible process. Some forms of chromatin modification can be passed on to future generations of cells. Acetylation of histone tails in chromatin allows access to DNA for transcription.
Biology
1 answer:
Kay [80]3 years ago
7 0

The correct answers are:  

  • Methylation of histone tails in chromatin can promote condensation of the chromatin.
  • DNA is not transcribed when chromatin is packaged tightly in a condensed form.
  • Acetylation of histone tails is a reversible process.
  • Some forms of chromatin modification can be passed on to future generations of cells.  
  • Acetylation of histone tails in chromatin allows access to DNA for transcription.

Histone modifications are post-translational modifications of histone protein that can affect gene expression by altering chromatin structure or recruiting histone modifiers.The most common modifications are methylation, phosphorylation, acetylation and ubiquitylation. All of them affect the binding affinity between histones and DNA and thus loosening (gene activation) or tightening (gene repression) the condensed DNA.

Histone methylation is a transfer of methyl group by histone methyltransferases to lysine or arginine amino acid of protein. Effect of methylation depends on the type of protein that is modified. Demethylation is the reverse process.

Histone acetylation is the process of adding of an acetyl group(by  histone acetyltransferases) to histone proteins and it can also activate or inhibit the gene expression. Deacetilation is reverse process.

You might be interested in
Give two ways that the activities of the caterpillar in the picture would change its ecosystem.
S_A_V [24]

1) Eating leaves

2) Being food for birds

3 0
3 years ago
Read 2 more answers
All geologic eras are about the same number of years.<br> True or false
rodikova [14]

Answer:

false

Explanation:

6 0
3 years ago
Read 2 more answers
Which of these sentences demonstrates the noun-verb-adverb pattern?
valina [46]

Answer:

D.

Explanation:

I think its D. sorry if its wrong

3 0
3 years ago
Protein phosphatase 1 (PP1) catalyzes a reaction which yields products that regulate cell division; consequently, PP1 is a possi
Natalka [10]

Answer:

Explanation:8iikk

4 0
3 years ago
Which is an ADVANTAGE of sexual reproduction?
Eva8 [605]
The answer is C. Genetically diverse offspring. 
4 0
3 years ago
Other questions:
  • In what ways do historical events change our attitude/valuation towards the environment?
    14·1 answer
  • While waiting at an airport, Neil Campbell once overheard this claim: "It’s paranoid and ignorant to worry about industry or agr
    14·1 answer
  • What is the process by which cells link monomers together to form polymers??
    9·1 answer
  • A secondary immune response occurs when an antigen is encountered on a second occasion, due to exposure to a pathogen that previ
    6·1 answer
  • Abe drank 5712 mL (milliliters) of diet coke. His wife Martha drank 7.04L of diet coke. How much more diet coke did Martha drink
    8·1 answer
  • The fact that we have unicellular and multi cellar organisms underlines which properties of life?
    15·2 answers
  • Which is an application of DNA technology in medicine?
    11·1 answer
  • Where can you find electrons in an atom?<br> PLEASE
    9·2 answers
  • Structural Difference between the heart and the lung
    8·1 answer
  • I am leaving brainly so free 100 points! I am doing more these so, don't worry if you didn't answer first.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!