A genetic condition known as Down syndrome is brought on by an abnormal cell division that leads to the creation of an additional full or partial copy of chromosome 21. The abnormalities in development and physical characteristics of Down syndrome are both caused by this additional genetic material. The severity of Down syndrome can vary from individual to individual, but it always results in intellectual disability and delayed development. Children who have this genetic chromosomal disorder are more likely to have learning difficulties than children who do not. It is also a common cause of other kinds of medical abnormalities, including problems with the heart and the digestive system. There is an approximately one in every 700 chances of having a child born with Down syndrome. There are many factors that go into determining this, but research suggests that there is an increased risk if the mother is over the age of 35 when she gives birth. When a woman is under the age of 30, the risk of having a child with Down syndrome is less than one in every 1,000 pregnancies. This number increases to approximately 12 in 1,000 after the age of forty years old.