Question
Biology Question on Structure of DNA and RNA
Which of the following is not found in DNA ?
A
adenine
B
cytosine
C
uracil
D
thymine
Answer
uracil
Explanation
Solution
Nitrogen base uracil is absent in DNA. Uracil is present in RNA. Thymine (T) in DNA is replaced by uracil in RNA (uracil : 2,6-oxypyrimidine).