Answer: X-linked recessive.
- A autosomal dominant
- B Y-linked dominant
- C X-linked dominant
- D X-linked recessive
Correct answer: D. X-linked recessive
Explanation: Colour blindness is an X-linked recessive condition, so it is expressed more often in males, who have only one X chromosome.
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 →