Question

Which of the following is not present in $DNA$ ?

• A. Thymine
• B. Guanine
• C. Adenine
• D. Uracil

Answer 1

Answer: (D)

Uracil is not present in DNA. It is present in RNA. DNA contains four bases, i.e. adenine (A), guanine $(G),$ cytosine $(C),$ and thyamine $(T).\ln$ RNA, thymine $(T)$ is replaced by uracil (U).