Tetrasomy 9p
Encyclopedia
Tetrasomy 9p is a rare genetic disease due to the inclusion of an isochromosome
of the short arm of chromosome 9 (9p). It is generally a mosaic
condition.
Isochromosome
An isochromosome is a chromosome that has lost one of its arms and replaced it with an exact copy of the other arm. This is sometimes seen in some females with Turner syndrome or in tumor cells. This may also cause an isochromosome to have two centromeres The chromosome arm is already copied during...
of the short arm of chromosome 9 (9p). It is generally a mosaic
Mosaic (genetics)
In genetic medicine, a mosaic or mosaicism denotes the presence of two populations of cells with different genotypes in one individual who has developed from a single fertilized egg...
condition.