Nullisomy

Aneuploidy: It is characterized by the loss or gain of a chromosomal set. It’s a situation in which one or a few chromosomes are added or removed from the usual amount of chromosomes. As a result, the number of chromosomes in aneuploidy can differ from the number of chromosomes in the wild type.
Nullisomy, monosomy, and trisomy are three different kinds of aneuploidy.
1. Nullisomy (2n-2) is the lack of both homologous pair chromosomes. Most creatures may die as a result of these conditions.
2. Monosomy (2n-1) is the loss of one of the homologous pair’s chromosomes.
3. Trisomy refers to the addition of a second chromosome (2n+1). Trisomy includes conditions such as Klinefelter syndrome (44+XXY/XYY) and Down syndrome.