Question

What is DNA? What are it's uses? How it differs from the RNA?

Answer 1

Deoxyribonucleic acid (DNA) is an extremely long macromolecule that is the main component of chromosomes and is the material that transfers genetic characteristics in all life forms, constructed of two nucleotide strands coiled around each other in a ladder like arrangement with the side pieces composed of alternating phosphate and deoxyribose units and the rungs composed of the purine and pyrimidine bases adenine, guanine, cytosine, and thymine: the genetic information of DNA is encoded in the sequence of the bases and is transcribed as the strands unwind and replicate.

DNA is the starting point of the central dogma and is the means of genetic information transfer from the parental cell to the daughter cell.

It is different from RNA because RNA is single stranded, has ribose sugar and has uracil base instead of thymine, however DNA is double stranded, has deoxyribose sugar and possesses thymine base instead of uracil.