Paternal uniparental disomy of chromosome 21 is an uniparental disomy of paternal origin that most likely does not have any phenotypic expression except from cases of homozygosity for a recessive disease mutation for which only father is a carrier.
Comprehensive, easy-to-understand information about this condition
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Down syndrome
MONDO:0008608
paternal uniparental disomy of chromosome 14
MONDO:0011975
ring chromosome 21
MONDO:0015437
silver-Russell syndrome due to maternal uniparental disomy of chromosome 11
MONDO:0016482
paternal uniparental disomy of chromosome 1
MONDO:0016650
maternal uniparental disomy of chromosome 1
MONDO:0016651