Question

Which of the following is not a Mendelian disorder?

• A. Cystic fibrosis
• B. Sickle cell anaemia
• C. Colour blindness
• D. Haemophilia
• E. Turner's syndrome

Answer 1

The correct option is E Turner's syndrome

Mendelian disorder is one that is controlled by the single locus of the inherited pattern. That means even a mutation in a single gene can cause disease e.g., cystic fibrosis, sickle anemia, colourblindness and haemophilia.

Turner's syndrome is characterized by the presence of single X chromosome so it does not apply to the mendelian trait.