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What else can I help you with?
How do DNA methylation and histone acetylation affect chromatin structure and the regulation of transcription?
When chromatin is tightly compacted and dense, it's called Heterochromatin. When chromatin is loosely packed, its called Euchromatin. Euchromatin is easily accessible to transcription enzymes, while herterochromatin makes transcription impossible because the enzymes cannot access the DNA. Therefore, a gene within heterochromatin cannot be expressed. Also, look up how histone modifications such as histone acetylation affect gene expression.
What are the repeating units in DNA called?
Hydrogen Bonds Adenine, Thymines, Guaines, and Cytosines.
What is a double helix where genetic code is found?
Very simply put, a gene is a region of DNA that codes for a protein DNA is composed of 4 different nucleotide bases- guanine, adenine, thymine, and cytosine. A group of three of these is called a codon. A codon codes for a particular amino acid. A protein is composed of a chain of amino acids put together in the codons are in. Therefore the genetic information is the sequence of codons and by extension the sequence of nucleotide bases.
Genetic information that is found in a cell is called what?
I suppose it's really just called DNA, but in some singe-celled organisms, it's just simply DNA. The DNA is found in the nucleus of a cell.
What is the Structure of histones and non histones?
Histones are the major protein structure of chromosomes. The DNA is wrapped twice around a histone octamer to create a nucleosome, which are assembled six at a time to make a Solenoid. Solenoids coil into a scaffold, which is then coiled itself to make the chromosomal matrix.
Histone-DNA units are called?
nucleosomes
What is the section of DNA called that has eight associated histone proteins?
The section of DNA with eight associated histone proteins is called a nucleosome. Nucleosomes are the basic unit of DNA packaging in eukaryotic cells, where DNA is wrapped around a core of histone proteins to form a chromatin structure.
What is DNA wrapped around in a nucleosome?
They're called histone proteins. There are 8histones proteins in which a loop of DNA wraps around twice. Then another histone protein called the H1 linker binds them together.
What is the protein around which chromosomal DNA is coiled?
The protein around which chromosomal DNA is coiled is called histones. Histones help in organizing DNA into structural units called nucleosomes, which then further coil and condense to form chromatin fibers.
What is the enzyme that unwinds the DNA from around the histone proteins?
The enzyme responsible for unwinding DNA from around histone proteins is called DNA helicase. It catalyzes the separation of the two strands of the DNA double helix, allowing access for other enzymes and proteins to interact with the DNA.
Eukaryotic chromosomes consist of this and DNA?
Eukaryotic chromosomes consist of histone proteins and DNA. The histone proteins help to package and organize the DNA into a compact structure, called chromatin, which allows for efficient storage and regulation of genetic material.
What is the differences between a chromosome and a DNA molecules?
Somewhat the difference between a brick and a brick wall. Chromosomes are made up of DNA molecules collected in units called genes ( leaving all else aside ) with attendant proteins, such as the histone proteins DNA wraps around.
A portion of a DNA molecule wound around a spool of histone protein is called a?
Such a structure is called a Nucleosome
What are the subunits of DNA called?
Purines, Pryimidine and Nucleotide are the subunits of DNA.
What is composed of DNA and proteins?
Chromatin is composed of DNA and histone proteins. Histone proteins help package and condense DNA into a complex structure that fits within the nucleus of a cell.
A portion of a DNA molecules wound around a spool of histone proyein is called?
cell cycle
Eukaryotic chromosomes contain both DNA and protein tightly packed together to form a substance called?
The complex of both histone and non-histone chromosomal proteins and DNA is known as chromatin.
