Tay-Sachs can happen to anyone of any heritage. French Canadians, Louisianan Cajuns and Askhenazi Jews are all considered high risk with a carrier rate of 1/27. Preliminary data suggests people of Irish / British Isle descent are at an increased risk between 1/50 and 1/150. The gene occurs in the general population at a rate 1/250.
All couples should see a genetic counselor before getting pregnant to discuss which diseases are appropriate for them.
Africa.
It is most common in people of Ashkenazi (Eastern European) Jewish descent and people of Saudi Arabian descent
People of Saudi Arabian descent also have a relatively high risk of Canavan disease
About 1 in 10,000, concentrated among people of English descent.
the disease is sickle cell
Mainly people of English descent, that have at least one parent that has the gene for HD.
Tay-Sach's Disease/
That is probably Salvador in Brazil with its capital Bahia.
India has the most Indians, as it is the country with the highest population of people of Indian descent.
Sickle cell anemia.
The disorder is more commonly found among white Europeans or in people of European descent. It is very unusual to find celiac disease in African or Asian people.
The correct list of social classes in colonial Latin America from highest to lowest would typically be: peninsulares (those born in Spain), creoles (those of Spanish descent born in the Americas), mestizos (people of mixed European and indigenous descent), indigenous peoples, African slaves, and mulattos (people of mixed European and African descent).