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Which of the following is not a Mendelian disorder?

Option: 1

Alzheimer's disease

Option: 2

Huntington's disease

Option: 3

Cystic fibrosis

Option: 4

Sickle-cell anaemia

Answers (1)


Alzheimer's disease is not considered a Mendelian disorder as it is not caused by a single gene mutation but is rather influenced by multiple genes and environmental factors. In contrast, the other options listed are Mendelian disorders caused by mutations in a single gene. Hence option A is the correct answer. Hence, option 1 is the correct answer.

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