Answer: All Aa.
- A All AA
- B All Aa
- C 25% AA : 50% Aa : 25% aa
- D 50% AA : 50% aa
Correct answer: B. All Aa
Explanation: AA x aa → 100% Aa (all heterozygous). All offspring show the dominant phenotype.
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 →