Reduced Parallel Gene Expression Evolution With Increasing Genetic Divergence-A Hallmark of Polygenic Adaptation.

ABSTRACT: Parallel evolution, the repeated evolution of similar traits in independent lineages, is a topic of considerable interest in evolutionary biology. Although previous studies have focused on the parallelism of phenotypic traits and their underlying genetic basis, the extent of parallelism at the level of gene expression across different levels of genetic divergence is not yet fully understood. This study investigates the evolution of gene expression in replicate Drosophila populations exposed to the same novel environment at three divergence levels: within a population, between populations and between species. We show that adaptive gene expression changes are more heterogeneous with increasing genetic divergence between the compared groups. This finding suggests that the adaptive architectur

SUBMITTER: Thorholludottir DAV 

PROVIDER: S-EPMC12143366 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature