<prompt> Preferential expression of same gene depending on parent of origin is referred to as:Genomic imprintingMosaicismAnticipationNon-penetrance  <response>: Genomic imprinting Phenomenon that leads to preferential expression of an allele depending on its, parental origin. Eg : Beckwith Wiedemann syndrome have two paternal but no maternal copies of chromosome 11. Albrights hereditary osteodystrophy sho stature, brachydactyly and PTH resistance. 