title: [Comparison of the karyotype of the orangutan (Pongo pygmaeus) to those of man, chimpazee, and gorilla].
abstract: Various banding thechniques were employed to compare the karyotype of the Orang-utan (Pongo pygmaeus) with those of Man, the Chimpanzee, and the Gorilla. The following was concluded: 1) Almost all the bands are common, their analogy being close to 99%. The four species derive, therefore, from a common ancestor. The rearrangements which occurred during evolution were generally balanced; 2) The analysis of rearrangements shows that the Orang-utan, then the Gorilla, then the Chimpanzee, and lastly Man were derived in that order from the common stemline.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D002872:Chromosome Deletion; D007446:Chromosome Inversion; D002875:Chromosomes; D002900:Chromosomes, Human, 1-3; D002901:Chromosomes, Human, 13-15; D002902:Chromosomes, Human, 16-18; D002903:Chromosomes, Human, 19-20; D002904:Chromosomes, Human, 21-22 and Y; D002905:Chromosomes, Human, 4-5; D002906:Chromosomes, Human, 6-12 and X; D005260:Female; D006071:Gorilla gorilla; D015186:Hominidae; D006801:Humans; D007621:Karyotyping; D008297:Male; D002679:Pan troglodytes; D013045:Species Specificity; D014178:Translocation, Genetic
vernacular_title: Comparaison du caryotype de l'orang-outang (Pongo pygmaeus) à celui de l'homme, du chimpanzé et du gorille