| distribution of telomeric sequences (ttaggg)n in rearranged chromosomes of phyllotine rodents (cricetidae, sigmodontinae). | phyllotines are sigmodontine rodents endemic to south america with broad genetic variability, robertsonian polymorphisms being the most frequent. moreover, this taxon includes a species with multiple sex chromosomes, which is infrequent in mammals. however, molecular cytogenetic techniques have never been applied to phyllotines to elucidate their karyotypic evolution. we studied the chromosomes of 4 phyllotine species using fish with a pantelomeric probe (ttaggg)n. graomys griseoflavus, eligmodo ... | 2015 | 27035350 |
| xy1y2 chromosome system in salinomys delicatus (rodentia, cricetidae). | salinomys delicatus is considered a rare species due to its restricted and patchy distribution, poor records and low abundances. it is also the phyllotine with the lowest known diploid chromosome number (2n = 18), however its sex chromosome system has never been described. here, we studied the chromosomes of six females and three males with bands g, c, dapi/cma(3) and meiosis. in males, the chromosome number was 2n = 19, with one large metacentric x-chromosome and two medium-sized acrocentrics a ... | 2011 | 22105874 |