Chromosomal polymorphism in Drosophila willistoni populations from Uruguay
AUTOR(ES)
Valente, Vera Lucia da Silva
DATA DE PUBLICAÇÃO
2010
RESUMO
Chromosomal polymorphism in natural populations of Drosophila willistoni from Uruguay and southern Brazil was investigated in order to understand the genetic characteristics and evolutionary potential of these almost geographically marginal populations. The level of chromosomal polymorphism in samples from Uruguay was higher than in those from the southernmost Brazilian state of Rio Grande do Sul. The increase in the polymorphism of these populations, in which the species almost reaches its southern limit, contradicts the low level of paracentric inversion polymorphism expected under the central-marginal chromosomal polymorphism cline previously reported. The high frequency of some inversions and the presence of unique inversions in samples from Uruguay indicate the uniqueness of these populations.
ASSUNTO(S)
drosophila willistoni drosophila willistoni : polimorfismo cromossomico chromosome inversion polymorphism uruguayan natural populations
ACESSO AO ARTIGO
http://hdl.handle.net/10183/23371Documentos Relacionados
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