Question

DNA differs from RNA in ______.

Options

• absence of - OH group at the 2'- position in pentose sugar

• presence of phosphate group at 2' - position in pentose sugar

• absence of phosphate group at the 2'- position in purine base

• presence of - OH group at the 2' - position in pyrimidine base

Answer 1

DNA differs from RNA in absence of - OH group at the 2'- position in pentose sugar.

Explanation:

The presence of an extra '-OH' group at the 2' position in pentose sugar distinguishes ribose nucleic acid (RNA) from deoxyribose nucleic acid (DNA).