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Detailed information on structural abnormalities, including chromosome deletions and duplications.

Detailed information on finding a support group for parents affected by a birth defect.

Detailed information on translocation Down syndrome

Detailed information on trinucleotide repeats, including fragile X syndrome.

Detailed information on uniparental disomy, including information about Prader-Willi syndrome and Angelman syndrome.

Genetic testing can help find diseases that run in a family or don't yet have symptoms.

Did you have chickenpox or get the vaccine as a child? Then you've got nothing to worry about from varicella. But if you didn't, you may not be immune to this infectious disease that can cause complications for a pregnant person and their baby. Read more to find out why, and how to protect yourself.

Gene therapy is a way to change the genes a person has. Enzyme therapy treats a genetic condition by replacing a certain enzyme.

Detailed information on x-linked dominant inheritance.