Trisomy [Ri- + (Chromo) Som] In Genetics

Trisomy is a type of polysomy, which is characterized by the presence of three homologous chromosomes in a cell. Trisomy can occur as a result of various genetic disorders such as mutations, chromosomal rearrangements and other genetic abnormalities.

One of the most common trisomy is trisomy 21, also known as Down syndrome. This syndrome is characterized by the presence of an extra chromosome 21 in the karyotype, which leads to various physical and mental abnormalities in children.

Trisomies can also occur during meiosis when chromosomes do not separate properly and remain together. This can lead to various genetic diseases such as Edwards syndrome, Patau syndrome and others.

In genetics, trisomies are an important area of ​​research as they can be associated with various diseases and developmental disorders. Studying trisomy helps scientists better understand the mechanisms underlying genetic diseases and develop new methods of treatment and prevention.

Although trisomies can have serious health consequences, they can also be of interest to genetic scientists because they can help them better understand the mechanisms of heredity and development.