protoplasm in cell nuclei, 1882, from German, coined 1879 by German anatomist Walther Flemming (1843-1905), from Latinized form of Greek khrōmat-, the correct combinational form of khrōma “color” (see chroma) + chemical suffix -in (2).
Where does the chromatin come from?
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).
Who coined the term chromatin?
The word chromatin was given by Flemming in 1879. It is derived from a Greek work chroma meaning colour.
What is the word that is used to describe chromatin?
: a complex of a nucleic acid with basic proteins (as histone) in eukaryotic cells that is usually dispersed in the interphase nucleus and condensed into chromosomes in mitosis and meiosis. Other Words from chromatin. chromatinic ˌkrō-mə-ˈtin-ik adjective.
What does the term chromatin refers to?
Chromatin is a complex of DNA and proteins that forms chromosomes within the nucleus of eukaryotic cells. … Each nucleosome is composed of DNA wrapped around eight proteins called histones.
What is the difference between DNA and chromatin?
The DNA is packaged by special proteins called histones to form chromatin. The chromatin further condenses to form chromosomes.
|Difference between Chromosomes and Chromatin|
|Composed of nucleosomes||They are condensed chromatin fibers|
Does chromatin have RNA?
Whether RNA itself plays a direct structural role in chromatin is, however, not known. Here, we report results indicating that RNA plays a general structural role in eukaryotic chromatin. Our results indicate that purified chromatin contains significant amounts of RNA (2%–5% of total nucleic acids).
What is P and Q in chromosome?
q arm of a chromosome: The long arm of a chromosome. … Origin of p and q as chromosome arms: The symbol “p” was chosen to designate the short arm because “p” stands for “petit”, “small” in French. The letter “q” was selected to signify the long arm merely because “q” is the next letter in the alphabet.
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 the root word of chromatin?
Chromatin was discovered by Walther Flemming in the 1880s, who noticed that the dense nucleic substance greatly absorbed certain dyes (hence the name “chromatin,” which derives from the Greek root “chroma” meaning “color”). …