Yasothai, R.TANUVAS2017-09-052017-09-052016-102278-3687http://krishikosh.egranth.ac.in/handle/1/5810030445Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms. A main role of DNA molecules is the storage of information. Chemically, DNA is a long polymer of simple units called nucleotides with a backbone made of sugars and phosphate groups joined by ester bonds. Attached to each sugar is one of four types of molecules called bases. It is the sequence of these four bases along the backbone of DNA that encodes information. Three nucleotides (nucleic acids) in DNA encode for three nucleotides in ribonucleic acid (RNA), which encode one protein molecule when the DNA is read (translated) from RNA to protein in the ribosome.en-USVeterinary ScienceArticle