Answer: Co-dominance (A and B) with recessive O.
- A Complete dominance of a single allele over all others
- B Incomplete dominance producing a blended intermediate phenotype
- C Co-dominance (A and B) with recessive O
- D Sex linkage carried on the X chromosome
Correct answer: C. Co-dominance (A and B) with recessive O
Explanation: Blood type A and B are codominant (both expressed in AB). O is recessive. Blood type is controlled by multiple alleles (IA, IB, i).
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 →