Detailed information on single gene defects and patterns of inheritance

Overview of autosomal recessive inheritance, including cystic fibrosis, sickle cell anemia, and Tay Sachs disease.

Are you ready to start thinking about a younger sibling for your baby? If so, here’s what you need to keep in mind before you prepare to keep growing your family.

Detailed information on nontraditional inheritance, including uniparental disomy and Prader-Willi Syndrome and Angelman Syndrome, trinucleotide repeats and Fragile-X Syndrome, and mitochondrial inheritance and Leber's Optic Atrophy

Detailed information on evaluating a child for birth defects

Multifactorial inheritance is when more than 1 factor causes a trait or health problem, such as a birth defect or chronic illness. Genes can be 1 factor, but other things that aren't genes can play a part, too.

Detailed information on mosaic Down syndrome, including the chances for it to happen again in a family

Mosaicism is when a person has 2 or more genetically different sets of cells in his or her body.

Detailed information on mitochondrial inheritance and Leber's optic atrophy.

Detailed information on medical genetics, including chromosome abnormalities, single gene defects, multifactorial inheritance, teratogens, and non-traditional inheritance