<unk>  (ROB) is a chromosomal abnormality wherein a certain type of a chromosome becomes attached to another. It is the most common form of chromosomal translocation in humans, affecting 1 out of every 1,000 babies born. It does not usually cause health difficulties, but can in some cases result in genetic disorders such as Down syndrome and Patau syndrome.<unk> s result in a reduction in the number of chromosomes.
Robertsonian translocation
Caudal duplication
Trisomy
Germline mosaicism
Postzygotic mutation
Uniparental disomy
Isodisomy
Chromosomal translocation