Swordtail fish hybrids reveal that genome evolution is surprisingly predictable after initial hybridization.

ABSTRACT: Over the past 2 decades, biologists have come to appreciate that hybridization, or genetic exchange between distinct lineages, is remarkably common-not just in particular lineages but in taxonomic groups across the tree of life. As a result, the genomes of many modern species harbor regions inherited from related species. This observation has raised fundamental questions about the degree to which the genomic outcomes of hybridization are repeatable and the degree to which natural selection drives such repeatability. However, a lack of appropriate systems to answer these questions has limited empirical progress in this area. Here, we leverage independently formed hybrid populations between the swordtail fish Xiphophorus birchmanni and X. cortezi to address this fundamental question. We find

SUBMITTER: Langdon QK 

PROVIDER: S-EPMC11379403 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature