Causes of Mosaicism in Turner syndrome

Turner syndrome is a chromosomal disease consisting of the complete or partial loss of the X chromosome. If this alteration in the number of chromosomes occurs after fertilization, it can lead to embryos and mosaic individuals.

Mosaicism consists of the coexistence of two or more genetically different cell populations in the same organism. In this case, there will be cells with a normal karyotype (46,XX) and cells with the monosomy that gives rise to Turner syndrome (45,X0).