Nail Patella Syndrome is found on chromosome #9. If you search "what chromosome is nail patella syndrome on?" in Google, then it will give you a bunch of websites that have a bunch of info. about it. hope this helps. :-)

No, it is not recessive. Nail-patella syndrome is inherited in an autosomal dominant manner. This means that possession of only one copy of the defective gene is enough to cause disease. When a parent has nail-patella syndrome each of their children has a 50% chance to inherit the disease-causing mutation.

A new mutation causing nail-patella syndrome can also occur, causing disease in a person with no family history. This is called a sporadic occurrence and accounts for approximately 20% of cases of nail-patella syndrome. The children of a person with sporadic nail-patella syndrome are also at a 50% risk of developing signs of the disorder.

Scientist fong 1897

The population is as far as 1 in 50,000 people suffer from yellow nail disease but the same is increasing and has reached to the limit of 1 per 30,000.

Nail-patella syndrome (NPS), also known as hereditary osteo-onychodysplasia (HOOD), is a rare, genetically determined disease, which is inherited as a dominant trait. So yes, it is hereditary.