MCQ
What is the number of $\begin{array}{cc}\\\backslash\phantom{.......}\\\phantom{}\ce{C = O}\\/\phantom{........}\end{array}$ groups present in nitrogen bases of nucleic acids, thymine and uracil respectively?
- A2 and 1
- ✓2 and 2
- C1 and 1
- D1 and 2