Answer: 9:3:3:1.
- A 3:1
- B 1:2:1
- C 9:3:3:1
- D 1:1:1:1
Correct answer: C. 9:3:3:1
Explanation: A dihybrid cross between two heterozygotes gives a 9:3:3:1 phenotypic ratio in the F2 generation.
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 →