Editor's note: This article was first published to mark World Down Syndrome Day in 2015. Marguerite (Maggie) Reardon is a senior writer at CNET, where she writes the "Ask Maggie" advice column, and a ...

"CBSN: On Assignment" airs Mondays at 10 p.m. ET/PT on CBS and on our streaming network, CBSN. Explore more on this topic in our "Behind the Lens" report. With the rise of prenatal screening tests ...

Down syndrome occurs when a baby develops an extra copy of the 21st chromosome during pregnancy, resulting in telltale symptoms. These distinctive signs and symptoms can include recognizable facial ...

Professor Rhonda Faragher AO is Director of the Down Syndrome Research Program in the School of Education at the University of Queensland, Australia. She is also Vice-President of Down Syndrome ...

Puerto Rico's Sofía Jirau became the first Victoria's Secret model with Down syndrome earlier this month – a welcome moment of disability inclusion. People with Down syndrome have an extra chromosome ...

When a pregnant woman finds out that she's likely to give birth to a baby with Down syndrome, she's often given the option to terminate the pregnancy. But families affected by the genetic disorder, ...

Medically reviewed by Nicholas R. Metrus, MD Key Takeaways Mosaic Down syndrome has some cells with three copies of chromosome 21, and some with two instead of all three.Only about 1% to 2% of people ...