A cytological study of the O5 chromosomal inversion of Drosophila subobscura (Diptera, Drosophilidae)

Abstract

The O 5 chromosomal inversion has been a cornerstone for understanding different aspects of the American colonization by Drosophila subobscura. To obtain more information of this evolutionary event it is important to know the pattern of bands of this inversion in detail. Comparing this pattern with that of D. melanogaster it is possible to predict which genes are located inside or close to the O 5 inversion and use them as genetic markers. In this study, the complete band pattern of the O 5 inversion is presented. Furthermore, the most important genes located inside it have been predicted. Finally, a constriction located close to the proximal breakage point of the O 5 inversion has been observed many times and its possible genetic significance is discussed.

The Va/Ba balanced lethal strain: thirty years of research in Drosophila subobscura (1977–2007)

“…2003). This strain can also be used for studying some chromosomal inversions lethal in homokaryotypic condition (Orengo and Prevosti 1992; Mestres et al. 1998, 2002).…”