Website Search
ID 15943

What is Down syndrome?

Description:
People with Down Syndrome (DS) have an excess of genetic material in their cells. The vast majority of people with this syndrome have an extra copy of chromosome 21. Down syndrome is one of the most commonly occurring genetic birth defects, and it is the most common genetic basis for mental retardation.
Keywords:
genetic birth defects,chromosome 21,extra copy,genetic basis,genetic material,mental retardation,birth defects,cells
Creative Commons License This work by Cold Spring Harbor Laboratory is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.

Related content:

15944. What causes Down syndrome?
People with Down Syndrome (DS) have an excess of genetic material in their cells.
15897. Down syndrome
People with Down Syndrome (DS) have an excess of genetic material in their cells. The vast majority of people with this syndrome have an extra copy of chromosome 21. Down syndrome is one of the most commonly occurring genetic birth defects, and it is the
15416. Chromosome 21: trisomy and Down Syndrome, Matt Ridley
Matt Ridley talks about chromosome 21, trisomy and Down Syndrome.
865. Mental Retardation
Mental retardation: struggle, stigma, science.
12142. "Is our national intelligence declining? The genetic point of view." L.S. Penrose (2)
"Is our national intelligence declining? The genetic point of view." L.S. Penrose (2)
10723. "Cretinism," flash cards on genetic defects
"Cretinism," flash cards on genetic defects
10729. "Paranoia," flash card on genetic defects
"Paranoia," flash card on genetic defects
10722. "Muscular atrophy," flash cards on genetic defects
"Muscular atrophy," flash cards on genetic defects
10725. "Feeble-mindness," flash cards on genetic defects
"Feeble-mindness," flash cards on genetic defects
10726. "Spastic idiocy," flash cards on genetic defects
"Spastic idiocy," flash cards on genetic defects
Cold Spring Harbor Laboratory
CSHL HomeAbout CSHLResearchEducationPublic EventsNewsstandPartner With UsGiving