Definitions for "Uniparental disomy"
Keywords:  disomy, upd, paternal, maternal, parent
Both members of a chromosome pair are inherited from one parent rather than one from each parent. Uniparental disomy may be maternal or paternal.
The inheritance of both copies of a single chromosome from one parent (and neither copy from the other).
(UPD) The situation in which both members of a chromosome pair, or parts of a chromosome pair, are inherited from the same parent.