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.
Chromosome painting of the pygmy tree shrew shows that no derived cytogenetic traits link primates and scandentia / Dumas F;Houck ML;Bigoni F;Perelman P;Romanenko SA;Stanyon R. - In: CYTOGENETIC AND GENOME RESEARCH. - ISSN 1424-8581. - STAMPA. - 136:(2012), pp. 175-179. [10.1159/000336976]
Chromosome painting of the pygmy tree shrew shows that no derived cytogenetic traits link primates and scandentia.
Bigoni F;STANYON, ROSCOE ROBERT
2012
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.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.