Chromosome spreading of the 5S rDNA clusters in the karyotype of Gymnotus inaequilabiatus (Gymnotiformes: Gymnotidae): insights into the role of the Rex-1 and Rex-3 retrotransposable elements of this process
Lucas Pietro Ferrari Gianini, Ligia Carla Balini, Fernanda Errero Porto, Luciana Andreia Borin-Carvalho and Carlos Alexandre Fernandes