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Chromosomal polymorphism in Drosophila willistoni populations from Uruguay Genet. Mol. Biol.
Valente,Vera Lúcia da Silva; Goñi,Beatriz; Valiati,Victor Hugo; Rohde,Cláudia; Morales,Nena Basílio.
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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Drosophila willistoni; Chromosome inversion polymorphism; Uruguayan natural populations.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000200009
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