This page lists the symbols and abbreviated terms used in the description of chromosomes and chromosomal abnormalities. Trisomy Disorders Registered with CDO GeneTests . A directory of genetics and prenatal diagnosis clinics in the United States. An introduction to genetic counseling and testing concepts.
Summary reports on availability of genetic testing.
A database on Genetic Syndromes and Abnormalities in human development. MCNdb - Mendelian Cytogenetics Network Database . A Web site for chromosomal rearrangements associated with mendelian or potential mendelian disorders. X-Linked Mental Retardation Database Support Groups Support Groups for Chromosomal Conditions . CDO - Chromosome Deletion Outreach .