Generally Chromatin is of two types: 1. Euchromatin: It has looser DNA packaging. It contains less DNA. It is lightly stained when observed under microscope. Transcriptionally active. It is found in both eukaryotes and prokaryotes. 2. Heterochromatin: It has tighter DNA packing. It is dark stained when observed under microscope. It contains more DNA. Transcriptionally […]

Nucleotides are the basic units of nucleic acids (DNA and RNA). Nucleic acids are biomolecules essential for all forms of life. A nucleotide has 3 components:  1. Pentose sugar> 2. Nitrogenous base 3. Phosphate sugar Pentose Sugar It is a monosaccharide with 5 carbon atoms. It forms the backbone of polynucleotide chain. It is also […]