Home › NEET UG › Biology › Principles of Inheritance and Variation › Haemophilia in humans is inherited as:
Haemophilia in humans is inherited as:
AAn autosomal dominant trait
BAn autosomal recessive trait
CA Y-linked dominant trait
DAn X-linked recessive trait
Answer & Solution
Correct answer: A. An autosomal dominant trait
Haemophilia is X-linked recessive. Carrier mothers transmit the affected X to half of their sons, who express the disease since they have only one X chromosome.
Related questions
Haemophilia and colour blindness are MORE COMMON in MALES than females because they are:Down syndrome is most commonly caused by:Sickle cell anaemia is caused by:The sex of a human baby is determined by:In the human ABO blood group system, a person with blood group AB has the genotype:In snapdragon (Antirrhinum), RR (red) × rr (white) gives F1 plants that are PINK. This patIn a DIHYBRID cross of YyRr × YyRr, the F2 phenotypic ratio is:In a monohybrid cross of Tt × Tt, the F2 PHENOTYPIC ratio is: