trisomioiden
Trisomy refers to a type of aneuploidy in which there are three instances of a particular chromosome instead of the usual two. This genetic condition can occur in both plants and animals, including humans. In humans, trisomies are typically caused by an error during meiosis, a type of cell division that produces gametes (sperm and egg cells). This error, known as nondisjunction, results in a gamete having an extra chromosome. When this gamete fuses with a normal gamete during fertilization, the resulting zygote will have three copies of that chromosome.
The presence of an extra chromosome can significantly impact development. The severity of the effects depends
In some cases, trisomies can affect sex chromosomes. For example, Klinefelter syndrome in males is characterized