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What is chromatin material Class 9?
Chromatin is a genetic material or a macromolecule comprising of DNA, RNA, and associated proteins, which constitute chromosomes in the nucleus of an eukaryotic cell. Support the DNA molecule to permit the process of cell cycle – meiosis and mitosis.
What is chromatin made up of Class 12?
The chromatin is a structure made up of DNA and histones. They exist in both compact form(heterochromatin) as well as less compact form (euchromatin). When the chromatin is in the condensed form, no replication of DNA occurs because of the tight chromatin structure conformation.
Is chromatin made up of nucleoprotein?
Chromatin is made up of a protein called nucleoprotein. Chromatin fibres exist in two forms namely heterochromatin and euchromatin. Heterochromatin is the compact form and euchromatin is the less compact form.
How is chromatin formed?
Prophase: During prophase of mitosis, chromatin fibers become coiled into chromosomes. Each replicated chromosome consists of two chromatids joined at a centromere. Each cell has the same number of chromosomes. The chromosomes continue to uncoil and elongate, forming chromatin.
Is chromatin made up of RNA?
Chromatin is a complex of macromolecules composed of DNA, RNA, and protein, which is found inside the nucleus of eukaryotic cells. Chromatin exists in two forms: heterochromatin (condensed) and euchromatin (extended).
What is nucleoid example?
The nucleoid, which means nucleus-like, is an irregularly shaped area containing the genetic material of the prokaryotic cell. It is different from the nucleus of a eukaryotic cell in a way that the genetic material is not enclosed in a membrane to separate it from the cytoplasm.
Where is the nucleoid found?
The bacterial nucleoid is generally found in the middle of rod-shaped cells, which often exhibit a DNA-free space at the cell poles. The coupled processes of transcription, translation, and membrane insertion may keep the nucleoid packaged and centered in this way.
What are facts about chromatin?
What is Chromatin’s Structure and Function? Euchromatin and Heterochromatin. Chromatin within a cell may be compacted to varying degrees depending on a cell’s stage in the cell cycle . Chromatin in Mitosis. Prophase: During prophase of mitosis, chromatin fibers become coiled into chromosomes. Chromatin, Chromosome, and Chromatid. Additional Reference.
What are the two components of chromatin?
Chromatin is a complex of macromolecules composed of DNA, RNA, and protein, which is found inside the nucleus of eukaryotic cells. Chromatin exists in two forms: heterochromatin (condensed) and euchromatin (extended).
What are some characteristics of chromatin?
Chromatin is a highly compressed and compactified form of genetic material. The main components of chromatin structure are DNA and various forms of histone proteins, that control the dynamics of genetic expression. The DNA molecule, which holds the genetic blueprint, has a coiled helix structure.
Is chromatin the same as a chromosome?
Chromatin is comprised of nucleosomes, whereas chromosomes are consist of compact chromatin fibers. Chromatin is present in unpaired fibers form; on the other hand, chromosomes are present in the form of paired arms. In chromatin, DNA is unfolded; conversely, in chromosomes, DNA is coiled or folded.