Down syndrome, the most frequent form of mental retardation caused by a microscopically demonstrable chromosomal aberration, is characterized by well-defined and distinctive phenotypic features and natural history. It is caused by triplicate state (trisomy) of all or a critical portion of chromosome 21.[supplied by OMIM, Apr 2005]
GeneCards Summary for DCR Gene
DCR (Down Syndrome Chromosome Region) is a Genetic Locus. Diseases associated with DCR include down syndrome.