Question

select the odd one out w.r.t. pyrimidine :
Uracil
,Adenine,
Cytosine,
Thymine​

Answer 1

The odd one out w.r.t. pyrimidine adenine.

• Purines are adenine, guanine while pyrimidines are thymine, cytosine and uracil.
• Components of DNA are adenine, guanine, thymine and cytosine.
• Components of RNA are adenine, guanine, cytosine and uracil.
• In RNA ribose sugar is present whereas DNA contains deoxyribose sugar.
• Adenine pairs with thymine by two hydrogen bonds whereas guanine binds with cytosine/uracil with three hydrogen bonds.
• Purines have two heterocyclic rings whereas pyrimidines have one heterocyclic ring.