High dynamism for neo-sex chromosomes: satellite DNAs reveal complex evolution in a grasshopper.

ABSTRACT: A common characteristic of sex chromosomes is the accumulation of repetitive DNA, which accounts for their diversification and degeneration. In grasshoppers, the X0 sex-determining system in males is considered ancestral. However, in some species, derived variants like neo-XY in males evolved several times independently by Robertsonian translocation. This is the case of Ronderosia bergii, in which further large pericentromeric inversion in the neo-Y also took place, making this species particularly interesting for investigating sex chromosome evolution. Here, we characterized the satellite DNAs (satDNAs) and transposable elements (TEs) of the species to investigate the quantitative differences in repeat composition between male and female genomes putatively associated with sex chromosomes.

SUBMITTER: Ferretti ABSM 

PROVIDER: S-EPMC7426270 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature