Climatic similarity and genomic background shape the extent of parallel adaptation in Timema stick insects.

ABSTRACT: Evolution can repeat itself, resulting in parallel adaptations in independent lineages occupying similar environments. Moreover, parallel evolution sometimes, but not always, uses the same genes. Two main hypotheses have been put forth to explain the probability and extent of parallel evolution. First, parallel evolution is more likely when shared ecologies result in similar patterns of natural selection in different taxa. Second, parallelism is more likely when genomes are similar because of shared standing variation and similar mutational effects in closely related genomes. Here we combine ecological, genomic, experimental and phenotypic data with Bayesian modelling and randomization tests to quantify the degree of parallelism and its relationship with ecology and genetics. Our results s

SUBMITTER: Chaturvedi S 

PROVIDER: S-EPMC7613875 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature