Your Guide to Understanding Genetic Conditions
Genetics Home Reference provides consumer-friendly information about the effects of genetic variation on human health.
More than 1,100 health conditions, diseases, and syndromes
More than 1,300 genes and the health effects of genetic changes
Autosomes, sex chromosomes, and mitochondrial DNA (mtDNA)
Learn about the basics of human genetics
Published: February 21, 2017
The resources on this site should not be used as a substitute for professional medical care or advice. Users with questions about a personal health condition should consult with a qualified healthcare professional.