Frequent question: What is the best definition of chromatin?

Chromatin is a substance within a chromosome consisting of DNA and protein. The DNA carries the cell’s genetic instructions. The major proteins in chromatin are histones, which help package the DNA in a compact form that fits in the cell nucleus.

What is chromatin quizlet?

Chromatin. An organelle which forms chromosomes during cell division. Consists of DNA, RNA, and proteins. This organelle can have different structures (e.g.an “x” or lines spinning). This organelle is only found in a eukaryote cell.

Where is a chromatin?

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 chromatin in a sentence?

Definition of Chromatin. genetic material composed of DNA and proteins that condenses to form chromosomes. Examples of Chromatin in a sentence. 1. Found in the inside of the cell, chromatin is made up mostly of DNA and proteins.

What is chromatic in biology?

/ ˈkroʊ mə tɪn / PHONETIC RESPELLING. Middle School Level. noun Cell Biology. the readily stainable substance of a cell nucleus, consisting of DNA, RNA, and various proteins, that forms chromosomes during cell division.

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What is chromatin made of quizlet?

Chromatin is made up of DNA tightly bound to proteins called histones.

What are characteristics of chromatin?

Chromatin is composed of DNA and histones that are packaged into thin, stringy fibers. These chromatin fibers are not condensed but can exist in either a compact form (heterochromatin) or less compact form (euchromatin). Processes including DNA replication, transcription, and recombination occur in euchromatin.

What is a chromatin state?

In the more general sense, the “chromatin state” of a genomic region can refer to the set of chromatin-associated proteins and histone modifications in that region. These are most often assayed by ChIP-seq, but also ATAC-seq, DNase-seq, ChIP-exo, and other methods.

What is chromatin organization?

Chromatin is a complex of DNA and protein found in eukaryotic cells. … In general, there are three levels of chromatin organization: DNA wraps around histone proteins, forming nucleosomes and the so-called beads on a string structure (euchromatin).

What is chromatin vs chromosome?

The main difference between chromatin and chromosome is that chromatin consists of the unravelled condensed structure of DNA for the purpose of packaging into the nucleus whereas chromosome consists of the highest condensed structure of the DNA doublehelix for the proper separation of the genetic material between …

What is a chromosome simple definition?

A structure found inside the nucleus of a cell. A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.

What does centromere mean in science?

A centromere is a constricted region of a chromosome that separates it into a short arm (p) and a long arm (q). During cell division, the chromosomes first replicate so that each daughter cell receives a complete set of chromosomes.

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What is chromatin BYJU’s?

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. … Tightly packing of the DNA to fit into the cell.

What does a nucleolus do?

The nucleolus is a dynamic membrane-less structure whose primary function is ribosomal RNA (rRNA) synthesis and ribosome biogenesis.

What is chromatin Fibre?

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. Chromatin, Chromosomes and Chromatids.