Evolution of a complex B-chromosome polymorphism in the grasshopper Eyprepocnemis plorans

  title={Evolution of a complex B-chromosome polymorphism in the grasshopper Eyprepocnemis plorans},
  author={Nuno Henriques-Gil and Juan Luis Santos and Pilar Arana},
B-chromosome systems in several Spanish natural populations of Eyprepocnemis plorans are reported. The geographical distributions of the fourteen types of B chromosomes, which were classified according to size, C-banding pattern, and meiotic behaviour, are described. The results indicate a common origin for most types and a possible independent origin for a few secondary B variants. The origin and mechanisms of evolution of this B chromosome polymorphism are discussed. 

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