Chromatin is the material that makes up a chromosome that consists of DNA and protein. The major proteins in chromatin are proteins called histones. They act as packaging elements for the DNA. The reason that chromatin is important is that it’s a pretty good packing trick to get all the DNA inside a cell.
What is the job of the chromatin?
Chromatin fibers are coiled and condensed to form chromosomes. Chromatin makes it possible for a number of cell processes to occur including DNA replication, transcription, DNA repair, genetic recombination, and cell division.
What is the main function of the chromatin in an animal cell?
Its functions are to package DNA into a smaller volume to fit in the cell, strengthen the DNA to allow mitosis and meiosis, and serve as a mechanism to control expression. The chromatin is found within the nucleus of eukaryotic cells and the cytoplasm of prokaryotic cells.
What is a chromatin for dummies?
A chromatid is one of two identical halves of a replicated chromosome. … Following DNA replication, the chromosome consists of two identical structures called sister chromatids, which are joined at the centromere.
What is chromatin in nucleus?
Chromatin is a complex of DNA and proteins that forms chromosomes within the nucleus of eukaryotic cells. Nuclear DNA does not appear in free linear strands; it is highly condensed and wrapped around nuclear proteins in order to fit inside the nucleus.
What is a ribosomes function?
A ribosome is a cellular particle made of RNA and protein that serves as the site for protein synthesis in the cell. The ribosome reads the sequence of the messenger RNA (mRNA) and, using the genetic code, translates the sequence of RNA bases into a sequence of amino acids.
Why is condensing of chromatin necessary?
Condensation of chromatin into sturdy chromosomes is also necessary to establish proper physical properties. Chromosomes must be stiff, resilient, and elastic enough to withstand forces coming from pulling microtubules and cytoplasmic drags during mitosis to prevent damage and breaks caused by external tensions.
What is the function of chromatin in a plant cell?
The primary function of chromatin is to compress the DNA into a compact unit that will be less voluminous and can fit within the nucleus. Chromatin consists of complexes of small proteins known as histones and DNA. The nucleosome is further folded to produce a chromatin fiber.
How do chromosomes relate to chromatin?
Explanation: Chromatin is DNA packaged by histones. When chromatin is condensed and further organized, we have chromosomes . Chromosomes are paired whereas chromatin is not.
What is chromatin material and how does it change?
The DNA + histone = chromatin
As the cell initiates divisions by either meiosis or mitosis. During the interfaces, DNA is combined with the proteins and organized into a structure called chromatin. This chromatin is a thread like structure which condenses to form chromosomes just before the cell division occurs.
What happens anaphase?
Anaphase is the fourth phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. … The separated chromosomes are then pulled by the spindle to opposite poles of the cell.
Why is it called sister chromatids?
A sister chromatid refers to the identical copies (chromatids) formed by the DNA replication of a chromosome, with both copies joined together by a common centromere. In other words, a sister chromatid may also be said to be ‘one-half’ of the duplicated chromosome. A pair of sister chromatids is called a dyad.
What are chromosomes made up?
A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.
What is the function of chromatin material Class 9?
The function of Chromatin material is to package DNA into a small volume to fit in the nucleus of the cell. This packaging allows it for performing mitosis, DNA replication and meiosis.