Question

which of the following nitrogen base is absent in RNA​

Answer 1

Thymine is the nitrogen base which is absent in RNA.

• The common nitrogenous bases in DNA and RNA are adenine, guanine and cytosine.
• The DNA has thymine as the fourth base whereas the RNA has uracil as the fourth base.
• Guanine pairs with cytosine in the structure of DNA and RNA.
• Adenine pairs with Thymine in the DNA structure.
• On the other hand, in the RNA structure, adenine pairs with uracil.

The question is not complete. The complete question is:

Which of the following nitrogenous bases is absent in RNA?

A Thymine

B Uracil

C Adenine

D Guanine