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}} $