`DNA` and `RNA` are chiral molecule due to the presence of:

Options

A. Chiral phosphate ester units
B. D-sugar component
C. L-sugar component
D. Chiral bases

Answer

B

Explanation

Complete hydrolysis of `DNA` (or `RNA`) yields a pentose sugar, phosphoric acid and nitrogen containing heterocyclic compounds (called bases). In `DNA` molecules, the sugar moiety is `beta - D - 2` dexoyribose whereas in `RNA` molecules, it is `beta-D-` ribose. Both `RNA` and `DNA` are chiral molecules due to chiral `D-`sugar component.