Colourblindness and haemophilia are two main sex-linked or X-linked recessive diseases. The gene of haemophilia goes to son from mother and to daughter from father. In this disease, the blood is fail to clot when exposed to air result in continuous bleeding and leads to death.
Represented below is the inheritance pattern of a certain type of traits in humans. Which one of the following conditions could be an example of this…
NEET UG 2012 — Zoology Principles of Inheritance and Variation
2012mcqmedium
Represented below is the inheritance pattern of a certain type of traits in humans. Which one of the following conditions could be an example of this pattern? 
Official previous-year question
Held on 30 Apr 2012 · Verified 9 Jul 2026.
Options
- A
Phenylketonuria
- B
Sickle cell anaemia
- C
Haemophilia
- D
Thalassemia
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