Chapter II: Genetic Material
1.a. Constituents of DNA
This molecule consists of simple molecules such as phosphoric acid (PO4H3), 5-
carbon monosaccharide's sugar (pentoses) and nitrogenous bases (purines or pyrimidines);
?In eukaryotes, DNA is essentially stored in the nucleus of cells, with a DNA fraction 
also present in mitochondria as well as, in plants, in chloroplasts.Deoxyribose (C5H10O4), or more exactly 2-deoxyribose, is a pentose (aldopentose) 
derived from ribose by substitution of hydrogen by hydroxyl group in the position 2.There are two main types of nucleic acid: ribonucleic acid (RNA) and 
deoxyribonucleic acid (DNA).1.1.