What's the big deal? By: Emma Wilson
Down syndrome is the most typical cause of intellectual disability. It is caused by the presence of an additional instance of the chromosome 21. This disease can be inherited but can only be detected at and before birth through a set of observations. It is equal between genders, races, and religious/ethnic groups.It gets more common if the mother is past a certain age. The older the mother when the child is born, there is a greater chance the child will have Down syndrome.