Answer: X-linked recessive.
- A Autosomal recessive
- B X-linked dominant
- C X-linked recessive
- D Y-linked
Correct answer: C. X-linked recessive
Explanation: X-linked recessive: carrier mother (XAXa) transmits the affected X to half her sons (XaY). Sons have only one X, so they show the disease.
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 →