Trisomy is a genetic condition where a person is born with an extra chromosome. The most common type of trisomy is Down syndrome.

Trisomy 18 and trisomy 13 are genetic disorders that include a combination of birth defects. This includes severe intellectual disability, as well as health problems involving nearly every organ system …

Trisomy (‘three bodies’) means the affected person has 47 chromosomes instead of 46. Down syndrome, Edward syndrome and Patau syndrome are the most common forms of trisomy. Children …

Oct 21, 2025 · A trisomy is a genetic disorder in which a person has three chromosomes instead of the usual two. The most well-known trisomy is Down syndrome, but there are others like Edwards …

Trisomy can affect some or all cells in the body and is present at birth, often being associated with various congenital disorders. Trisomies are caused by spontaneous and random errors in the …

Trisomy is a genetic disorder caused by an extra chromosome, leading to conditions like Down syndrome. Learn about its types, causes, symptoms, and treatments.

The term "trisomy" is used to describe the presence of an extra chromosome — or three instead of the usual pair. For example, trisomy 21 or Down syndrome occurs when a baby is born with three #21 …

Dec 14, 2025 · Discover everything about Trisomy, including Trisomy 21, 18, 13, and rare forms. Learn about causes, symptoms, diagnosis, treatments, and real statistics.

Aug 3, 2023 · Trisomy is a genetic condition caused by an alteration in the number of chromosomes where the affected person has three copies of one of the chromosomes instead of two.

A trisomy is a type of polysomy in which there are three instances of a particular chromosome, instead of the normal two. [1] A trisomy is a type of aneuploidy (an abnormal number of chromosomes).