- A Cytosine
- B Guanine
- C Thymine
- D Uracil
Correct answer: C. Thymine
Explanation: In DNA: A pairs with T (2 hydrogen bonds); G pairs with C (3 hydrogen bonds). In RNA: A pairs with U.
Concept context
Mendel's laws, inheritance patterns, DNA structure, and molecular biology. Core of NEET biology.
Read the full Principles of Inheritance and Variation notes →