Question

Purines of DNA are represented by
(a) uracil and thymine
(b) guanine and adenine
(c) uracil and cytosine
(d) thymine and cytosine

Answer 1

Hey dear,

◆ Answer - (b)

Purines of DNA are represented by *guanine and adenine*.

◆ Explanation -

- Nitrogen bases are involved in the formation of nucleotides.

- Purine bases are adenine & gaunine.

- Pyrimidine bases are cytosine, thiamine & uracil.

- DNA contains 4 bases A, G, C & T.

- RNA contains 4 bases A, G, C & U.

Hope this helps you solve your query. Thanks for asking..