| comparative analyses of three swallow species (aves, passeriformes, hirundinidae): insights on karyotype evolution and genomic organization. | despite the richness of species in the hirudinidae family, little is known about the genome organization of swallows. the progne tapera species presents genetic and morphological difference when compared to other members of the same genus. hence, the aims of this study were to analyze the chromosomal evolution of three species progne tapera, progne chalybea and pygochelidon cyanoleuca - by comparative chromosome painting using two sets of probes, gallus gallus and zenaida auriculata, in order to ... | 2020 | 32162650 |
| karyotype evolution and distinct evolutionary history of the w chromosomes in swallows (aves, passeriformes). | as in many other bird groups, data on karyotype organization and distribution of repetitive sequences are also lacking in species belonging to the family hirundinidae. thus, in the present study, we analyzed the karyotypes of 3 swallow species (progne tapera, progne chalybea, and pygochelidon cyanoleuca) by giemsa and agnor staining, c-banding, and fish with 11 microsatellite sequences. the diploid chromosome number was 2n = 76 in all 3 species, and nors were observed in 2 chromosome pairs each. ... | 2019 | 31158838 |