A new mutant gene possibly carried simultaneously by two distinct gametes.
D005260:Female; D005385:Fingers / Q000002:abnormalities*; D005799:Genes, Dominant; D005826:Genetics, Medical; D005854:Germ Cells; D006228:Hand Deformities, Congenital; D006801:Humans; D008297:Male; D009154:Mutation; D010375:Pedigree; D011247:Pregnancy; D014427:Twins