The library model for satellite DNA evolution: a case study with the rodents of the genus Ctenomys (Octodontidae) from the Iberá marsh, Argentina.

On the basement of the library model of satellite DNA evolution is the differential amplification of subfamilies through lineages diversification. However, this idea has rarely been explored from an experimental point of view. In the present work, we analyzed copy number and sequence variability of RPCS (repetitive PvuII Ctenomys sequence), the major satellite DNA present in the genomes of the rodents of the genus Ctenomys, in a closely related group of species and forms inhabiting the Iberá marsh in Argentina.