The William Allan Memorial Award Lecture. On the nature of men.
D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D004200:Diseases in Twins; D004626:Embryology; D005053:Eugenics; D005826:Genetics, Medical; D006801:Humans; D008967:Molecular Biology; D009030:Mosaicism; D010684:Philosophy; D013997:Time Factors; D014314:Trisomy