Chromatin fibers. … In interphase (nondividing) cells, most of the chromatin (called euchromatin) is relatively decondensed and distributed throughout the nucleus (Figure 4.11). During this period of the cell cycle, genes are transcribed and the DNA is replicated in preparation for cell division.
Is chromatin seen in dividing and nondividing cells?
Instead, DNA is found in chromatin. This is the DNA and its associated proteins (histones and non-histone proteins) that are found in the nucleus of a non-dividing cell. Chromatin is distributed throughout the nucleus, and in this form would be difficult to distribute accurately between the daughter cells.
Do prokaryotes have chromatin?
Eukaryotic chromosomes are composed of chromatin, and each consists of two complementary strands of DNA coiled tightly around histones. The structure of chromatin is scaffolded, with three distinct levels.
|Eukaryotic Chromosome||Prokaryotic Chromosome|
|Location||Nucleus||Nucleoid (region in cytoplasm)|
Is chromatin found in cytoplasm?
The prokaryotic genome typically exists in the form of a circular chromosome located in the cytoplasm. … Chromosomes are made up of a DNA-protein complex called chromatin that is organized into subunits called nucleosomes.
Is chromatin easy to read and copy?
After an m-RNA message is transcribed from the DNA it is edited.
BEADLIKE STRUCTURE FORMED WHEN DNA WRAPS AROUND HISTONES.
|In dividing? OR non-dividing cells?||IN NON-DIVIDING CELLS||IN DIVIDING CELLS|
|Easy to read & copy? OR Easy to move?||EASY TO READ & COPY||EASY TO MOVE|
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 the best definition of chromatin?
: a complex chiefly of DNA and histone in eukaryotic cells that is usually dispersed in the interphase nucleus and condensed into chromosomes in mitosis and meiosis and in which the nucleosome makes up its repeating subunits In eukaryotes, the DNA interacts with the histone proteins to form a tightly packed …