A Glimpse into the Satellite DNA Library in Characidae Fish (Teleostei, Characiformes).

ABSTRACT: Satellite DNA (satDNA) is an abundant fraction of repetitive DNA in eukaryotic genomes and plays an important role in genome organization and evolution. In general, satDNA sequences follow a concerted evolutionary pattern through the intragenomic homogenization of different repeat units. In addition, the satDNA library hypothesis predicts that related species share a series of satDNA variants descended from a common ancestor species, with differential amplification of different satDNA variants. The finding of a same satDNA family in species belonging to different genera within Characidae fish provided the opportunity to test both concerted evolution and library hypotheses. For this purpose, we analyzed here sequence variation and abundance of this satDNA family in ten species, by a combina

SUBMITTER: Utsunomia R 

PROVIDER: S-EPMC5557728 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature