Single gene disorder which does not follow Mendelian inheritance –
Correct Answer: Fragile X-syndrome
Description: Transmission of certain single-gene disorders does not follow classical Mendelian principles.
This group of the disorder can be classified into the following categories -
Diseases caused by triplet - repeat mutation, e.g. fragile - X syndrome, Huntington disease, & others.
Disorders caused by a mutation in mitochondrial genes, e.g. labour hereditary optic neuropathy.
A disorder associated with genomic imprinting.
Disorders associated with gonadal mosaicism.
Category:
Pathology
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