- A 3:1 dominant:recessive
- B 1:2:1 ratio as seen in incomplete dominance
- C 1:1 ratio as seen in a test cross
- D All offspring showing the dominant phenotype
Correct answer: A. 3:1 dominant:recessive
Explanation: Aa x Aa → 1 AA : 2 Aa : 1 aa. Phenotype: 3 dominant (AA + 2 Aa) : 1 recessive (aa). Classic 3:1 ratio.
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 →