Biomolecules Question 21

Question: In DNA, the complementary bases are

[CBSE PMT 1998]

Options:

A) Uracil and adenine; cytosine and guanine

B) Adenine and thymine; guanine and cytosine

C) Adenine and thymine; guanine and uracil

D) Adenine and guanine; thymine and cytosine

Show Answer

Answer:

Correct Answer: B

Solution:

$ \underset{\text{2 hydrogen bonds}}{\mathop{Adenine=Thymine}}\text{,}\underset{\text{3 hydrogen bonds}}{\mathop{Guanine\equiv Cytosine}} $