Chromosomal polymorphism in Drosophila willistoni populations from Uruguay
Genet. mol. biol
; Genet. mol. biol;26(2): 163-173, Jun. 2003. ilus, mapas, tab
Article
en En
| LILACS
| ID: lil-345966
Biblioteca responsable:
BR26.1
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
Texto completo:
1
Colección:
01-internacional
Base de datos:
LILACS
Asunto principal:
Polimorfismo Genético
/
Drosophila
/
Inversión Cromosómica
Límite:
Animals
País/Región como asunto:
America do sul
/
Brasil
/
Uruguay
Idioma:
En
Revista:
Genet. mol. biol
Asunto de la revista:
GENETICA
Año:
2003
Tipo del documento:
Article
País de afiliación:
Brasil
/
Uruguay
Pais de publicación:
Brasil