Down syndrome (DS or DNS), also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. It is usually ...

en.wikipedia.org

Down syndrome is a condition in which a person has an extra chromosome. Learn more facts about Down Syndrome.

www.cdc.gov

Down syndrome is usually caused by an error in cell division called “ nondisjunction.” Nondisjunction results in an embryo with three copies of chromosome 21 ...

www.ndss.org

Mar 8, 2018 ... Down syndrome is a genetic disorder caused when abnormal cell division results in an extra full or partial copy of chromosome 21. This extra ...

www.mayoclinic.org

Feb 11, 2020 ... Down syndrome is a chromosomal condition that is associated with intellectual disability, a characteristic facial appearance, and weak muscle ...

ghr.nlm.nih.gov

Down syndrome (sometimes called Down's syndrome) is a condition in which a child is born with an extra copy of their 21st chromosome — hence its other ...

www.healthline.com

May 5, 2019 ... People with Down syndrome have an extra chromosome that impacts how a person looks and their ability to think, learn, and reason. Find out ...

www.webmd.com

Lancet. 2003 Apr 12;361(9365):1281-9. Down's syndrome. Roizen NJ(1), Patterson D. Author information: (1)Department of Pediatrics, SUNY Upstate Medical ...

www.ncbi.nlm.nih.gov

Down syndrome occurs when a baby is born with an extra chromosome 21. This extra chromosome results in small stature and low muscle tone, among other ...

www.medicalnewstoday.com

Down syndrome is a genetic disorder that includes certain birth defects, learning problems, and facial features.

www.stanfordchildrens.org

Down syndrome (DS or DNS), also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21.

en.wikipedia.org

Down syndrome occurs when an individual has a full or partial extra copy of chromosome 21.,Down syndrome is usually caused by an error in cell division called “nondisjunction.”

www.ndss.org

Down syndrome is a chromosomal condition that is associated with intellectual disability, a characteristic facial appearance, and weak muscle tone (hypotonia) in infancy.

ghr.nlm.nih.gov

Down's Syndrome Association. A Registered Charity No. 1061474.,In 2020, celebrate with us the stories of people with Down’s syndrome who have thrived through the last 50 years.

www.downs-syndrome.org.uk

The genetic basis of Down syndrome. There are 23 pairs of chromosomes, for a total of 46. Half the chromosomes come from the egg (the mother) and half come from the sperm (the father).

www.mayoclinic.org

Down Syndrome Education International works to improve early intervention and education for children with Down syndrome around the world.

www.down-syndrome.org

Down syndrome (sometimes called Down’s syndrome) is a condition in which a child is born with an extra copy of their 21st chromosome — hence its other name, trisomy 21. This causes physical and...

www.healthline.com

Down syndrome (DS), also called Trisomy 21, is a condition in which a person is born with an extra chromosome. Chromosomes contain hundreds, or even thousands, of genes.

kidshealth.org

Down syndrome is associated with a host of distinctive physical characteristics, medical issues, and developmental and intellectual delays. Learn more.

www.verywellhealth.com

Down Syndrome Ireland offers support and services to people with Down syndrome and their families throughout Ireland.

downsyndrome.ie