Answer: Seven pairs.
- A Seven pairs
- B Five pairs
- C Four pairs
- D Nine pairs
Correct answer: A. Seven pairs
Explanation: Mendel studied seven pairs of contrasting characters, such as seed shape, seed colour and plant height.
Punnett square for a monohybrid cross between two heterozygous (Tt) parents, showing the 3:1 phenotypic ratio predicted by Mendel's Law of Segregation.
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 →