1 in 1,000 to 1 in 1,100 live births worldwide are children born with down syndrome. The United Nations notes that each year, approximately 3,000 to 5,000 children are born with this chromosome ...

A century after Down syndrome was first described, scientists discovered that the root cause of this disorder is a condition called trisomy 21. What strides in research have been made since then?

because they have read that it is older women that have children with Down syndrome. As women age, there is a risk that during cell division, a pair of chromosomes fails to separate properly ...