Chromosome 21 of man, 22 of the great apes and 16 of the mouse.
D000818:Animals; D002869:Chromosome Aberrations / Q000235:genetics; D025063:Chromosome Disorders; D002904:Chromosomes, Human, 21-22 and Y; D004314:Down Syndrome / Q000235:genetics; D015186:Hominidae / Q000235:genetics; D006801:Humans; D051379:Mice; D013045:Species Specificity; D014314:Trisomy