Songbirds have a species quantity nearly comparable to compared to animals, and they are classic models for learning mechanisms of speciation and selection that is sexual. Intercourse chromosomes are hotspots of both processes, yet their evolutionary history in songbirds stays ambiguous. To elucidate that, we characterize female genomes of 11 songbird types ZW that is having sex, with 5 genomes of bird-of-paradise types newly stated in this work. We conclude that songbird intercourse chromosomes have actually encountered at the very least four actions of recombination suppression before their species radiation, creating a gradient pattern of pairwise series divergence termed ‘evolutionary strata’. 继续阅读“Powerful history that is evolutionary gene content of intercourse chromosomes across diverse songbirds”