Which disorder is a single-gene disease?
Osteoporosis
Celiac disease
Type 2 diabetes
Huntington’s disease

The branch of science which deals with the gene and inheritance is called genetics.

the correct option is D.

The genes present on the chromosome other than the sex chromosome is called autosomal chromosome.

Hence, Huntington's is a disease in which only gene is affected.

Therefore, the correct option is D that is Huntington’s disease

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D) Huntington’s disease

Explanation:

Huntington's disease is a well-known autosomal dominant disorder, which means for someone to get this disease they only need one copy of the defective gene to develop the disorder.

Thus this disorder is a single-gene disease where only one defective version of one gene is enough to cause the disease.

the answer is : )