tetrasomie
Tetrasomy is a genetic condition characterized by the presence of an extra copy of one of the four chromosomes in a pair, resulting in a total of four copies of that chromosome instead of the usual two. This condition is relatively rare and can occur spontaneously or be inherited. The most common form of tetrasomy is tetrasomy 21, which is synonymous with trisomy 21 and is the genetic basis for Down syndrome.
Tetrasomy can also occur with other chromosomes, such as tetrasomy 9, tetrasomy 18, and tetrasomy 22. Each
The diagnosis of tetrasomy is typically made through prenatal testing, such as amniocentesis or chorionic villus
Tetrasomy is a complex genetic condition with a wide range of associated symptoms and complications. While