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Question

Which of the following is not a Mendelian disorder?

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

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.

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