Localization and Characterization of X Chromosome Inversion Breakpoints Separating Drosophila mojavensis and Drosophila arizonae
نویسندگان
چکیده
منابع مشابه
An autosomal factor from Drosophila arizonae restores normal spermatogenesis in Drosophila mojavensis males carrying the D. arizonae Y chromosome.
Males of Drosophila mojavensis whose Y chromosome is replaced by the Y chromosome of the sibling species Drosophila arizonae are sterile. It is shown that genetic material from the fourth chromosome of D. arizonae is necessary and sufficient, in single dose, to restore fertility in these males. In introgression and mapping experiments this material segregates as a single Mendelian factor (sperm...
متن کاملEvolutionary relationships of Drosophila mojavensis geographic host races and their sister species Drosophila arizonae.
The cactophilic Drosophila mojavensis species group living in the deserts and dry tropical forests of the southwestern United States and Mexico provides a valuable system for studies in diversification and speciation. Rigorous studies of the relationships between host races of D. mojavensis and the relationships among the members of the species group (D. mojavensis, Drosophila arizona, and Dros...
متن کاملSympatry, allopatry and sexual isolation between Drosophila mojavensis and D. arizonae.
Populations of the North American cactophilic fruitfly Drosophila mojavensis and its sibling species D. arizonae exist both in sympatry and in allopatry. Females of D. arizonae, regardless of their population of origin, are effectively completely isolated behaviorally from D. mojavensis males. On the other hand, females of D. mojavensis from the sympatric populations in Sonora, Mexico exhibit s...
متن کاملMolecular characterization of the breakpoints of an inversion fixed between Drosophila melanogaster and D. subobscura.
The two breakpoints of a chromosomal inversion fixed since the split of Drosophila melanogaster and D. subobscura lineages have been isolated and sequenced in both species. The regions spanning the breakpoints initially were identified by the presence of two signals after interspecific in situ hybridization on polytene chromosomes. Interspecific comparison of the sequenced regions allowed us to...
متن کاملDrosophila laminin: characterization and localization
Drosophila laminin was isolated from the medium of Drosophila Kc cell cultures. It was purified by velocity sedimentation, gel filtration, and chromatography. Drosophila laminin is a disulfide-linked molecule consisting of three chains with apparent molecular masses of 400, 215, and 185 kD. In electron micrographs, it has the cross-shaped appearance with globular domains characteristic of verte...
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ژورنال
عنوان ژورنال: Journal of Heredity
سال: 2006
ISSN: 1465-7333,0022-1503
DOI: 10.1093/jhered/esl065