The recurrence of monogolism in sibships.
D003878:Dermatoglyphics; D004200:Diseases in Twins; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D006801:Humans; D008297:Male; D008423:Maternal Age; D009030:Mosaicism; D010375:Pedigree; D011247:Pregnancy; D012306:Risk; D014178:Translocation, Genetic; D014314:Trisomy; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic