title: Chromosome painting of the pygmy tree shrew shows that no derived cytogenetic traits link primates and scandentia.
abstract: We hybridized human chromosome paints on metaphases of the pygmy tree shrew (Tupaia minor, Scandentia). The lack of the ancestral mammalian 4/8 association in both Primates and Scandentia was long considered a cytogenetic landmark that phylogenetically linked these mammalian orders. However, our results show that the association 4/8 is present in Tupaia along with not previously reported associations for 1/18 and 7/10. Altogether there are 11 syntenic associations of human chromosome segments in the pygmy tree shrew karyotype: 1/18, 2/21, 3/21, 4/8, 7/10, 7/16, 11/20, 12/22 (twice), 14/15 and 16/19. Our data remove any cytogenetic evidence that Scandentia has a preferential phylogenetic relationship with Primates.
authors.affiliation: Section Animal Biology and Biological Anthropology G. Reverberi, Department of Environment Biology and Biodiversity, University of Palermo, Palermo, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Dumas
authors.forename: M L
authors.initials: ML
authors.lastname: Houck
authors.forename: F
authors.initials: F
authors.lastname: Bigoni
authors.forename: P
authors.initials: P
authors.lastname: Perelman
authors.forename: S A
authors.initials: SA
authors.lastname: Romanenko
authors.forename: R
authors.initials: R
authors.lastname: Stanyon
mesh_terms: D000818:Animals; D002460:Cell Line; D002871:Chromosome Banding; D020223:Chromosome Painting; D006801:Humans; D007621:Karyotyping; D008297:Male; D010802:Phylogeny; D011323:Primates / Q000145:classification / Q000235:genetics*; D014418:Tupaiidae / Q000145:classification / Q000235:genetics*