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

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 (‘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 …

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

Trisomy 13 and trisomy 18 are genetic disorders. They include a combination of birth defects, such as severe learning problems and health problems that affect nearly every organ in the body.

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 …

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 …

Jan 10, 2026 · Understand the science behind trisomy, its major types, detection methods, and the outlook for affected individuals and families.

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).