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The Nucleosome has an approximate two fold axis of symmetry which is called the Dyad Axis. So when you rotate the Nucleosome by 180 degree you would observe the similar view of Nucleosome before the rotation.

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13y ago
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5mo ago

In a DNA nucleosome, the DNA double helix is wrapped around a core of histone proteins forming a structure known as a nucleosome. The dyad axis refers to the central point of symmetry within the nucleosome where the DNA helix is bent and connected by a histone protein. This bending allows for tight packaging of DNA while still maintaining accessibility for regulation and transcription.

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Q: Dyad axis DNA nucleosome
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What is the difference between nucleosome and chromatosome?

Histone H1Histone H1 is found in a chromatosome but not in a nucleosome. Nucleosome with approximately 200bp of DNA and the histone octamer with H1 protein. but in chromatosome, the linher DNA of approximately 45bp is absent.


What is the fundamental repeating unit of organization in a eukaryotic chromosome?

The fundamental repeating unit of organization in a eukaryotic chromosome is the nucleosome. A nucleosome consists of DNA wrapped around a core of histone proteins. Multiple nucleosomes are connected by linker DNA to form chromatin fibers.


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?

The subunits of DNA are called nucleotides, which consist of a sugar molecule, a phosphate group, and a nitrogenous base.


What is the order of size between codon chromosome nucleotide DNA and nucleosome?

The order of size from smallest to largest is as follows: nucleotide, codon, DNA molecule, chromosome, nucleosome. A nucleotide is the basic building block of DNA, a codon is a sequence of three nucleotides that encode for a specific amino acid, DNA is a long molecule that carries genetic information, a chromosome is a condensed structure of DNA, and a nucleosome is a structural unit of DNA wrapped around a core of histone proteins.


What is a nucleosome and what organic component is it primarily composed of?

Chromatin composed of tetramer of histones 2 copies each of Histone H2A, H2B, H3 and H4. DNA is bound on the nucleosome and uses 147 basepairs of DNA.


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.


How many times does DNA loop around the histone proteins in the nucleosome?

DNA wraps around histone proteins in the nucleosome about 1.65 times. This wrapping forms the fundamental unit of chromatin organization and helps regulate gene expression and DNA replication.


What is the description of a chromatin fiber?

A chromatin fiber is the point at which DNA in chromatin is higher then the nucleosome. Chromatin fibers occur when the linear array of the nucleosome fold into a tighter fiber.


What structure allows enormous lengths of DNA to be folded into the nucleus?

The nucleosome. The nucleosome consists of DNA wound tightly around a protein called histone. This winding is sort of like coiling up a rope, and allows DNA to be packaged into a smaller space than would otherwise be achieved.


DNA and histones form beadlike globule know as?

nucleosomes. Nucleosomes are the basic unit of DNA packaging in eukaryotic cells, where DNA is wound around histone proteins to form a chromatin structure. This helps in condensing and organizing the genetic material within the cell nucleus.


What is the size of nucleosome?

A nucleosome is approximately 10 nm in size and consists of DNA wrapped around a core of histone proteins. It is a fundamental unit of chromatin structure in eukaryotic cells.