👉 Heterosomia, also known as genetic duplication or sex-linked inheritance, is a condition in which an individual has two copies of a chromosome. In other words, one copy of each sex chromosome (X and Y) is present in a cell's nucleus, while the other copy is missing. This means that when an individual inherits two copies of the same sex chromosome from their parents, they have an extra copy. Heterosomia can lead to various health problems such as intellectual disability
