- A A = G and C = T, an unrelated pairing rule
- B A = T and G = C (complementary base pairing)
- C A is generally found in greater amount than T
- D The ratio of A+T to G+C is generally constant within a species
Correct answer: B. A = T and G = C (complementary base pairing)
Explanation: Chargaff's rules: A = T and G = C (in quantity). This holds for double-stranded DNA of any species.
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 →