Question

The direction of RNA and DNA synthesis is

• A. 5' $\to$ 3' and 3' $\to$ 5'
• B. 3' $\to$ 5' and 5' $\to$ 3'
• C. 5' $\to$ 3' for both
• D. 3' $\to$ 5' for both

Answer 1

The correct option is C 5' $\to$ 3' for both

DNA replication is bidirectional, continuous and discontinuous simultaneously. Similarly, RNA synthesis also occurs in a specific direction always. The direction for both DNA and RNA synthesis is thus 5'-3'.

So, the correct option is ' 5' - 3' for both'.