Artículos de revistas
Distribution of the Bari-I transposable element in stable hybrid strains between Drosophila melanogaster and Drosophila simulans and in Brazilian populations of these species
Fecha
2007-01-01Registro en:
Genetics and Molecular Biology. Sociedade Brasileira de Genética, v. 30, n. 3, p. 676-680, 2007.
1415-4757
10.1590/S1415-47572007000400028
S1415-47572007000400028
S1415-47572007000400028.pdf
2307201085881971
3425772998319216
0000-0002-0298-1354
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
We analyzed the distribution of the Bari-I transposable element in Drosophila melanogaster (IN(1)AB), its sibling species Drosophila simulans (C167.4) and in eight hybrid strains derived from initial crosses involving D. simulans females and D. melanogaster males of the above cited strains as well as in Brazilian populations of these species. Polymerase chain reaction (PCR) data showed the presence of the Bari-I element among species populations and hybrid strains. Hybridization with a 703 bp probe homologous to the Bari-I sequence showed that the number of Bari-I copies in D. melanogaster IN(1)AB was higher than in D. simulans C167.4 strains. Hybrid strains presented Bari-I sequences related to both parental species. In addition some strains displayed a Bari-I sequence that came from D. melanogaster, suggesting introgression of D. melanogaster genetic material in the background of D. simulans. In contrast, some hybrids showed deletions of D. simulans Bari-I sequences.