Multi-faceted analysis provides little evidence for recurrent whole-genome duplications during hexapod evolution.

ABSTRACT:

Background

Gene duplication events play an important role in the evolution and adaptation of organisms. Duplicated genes can arise through different mechanisms, including whole-genome duplications (WGDs). Recently, WGD was suggested to be an important driver of evolution, also in hexapod animals.

Results

Here, we analyzed 20 high-quality hexapod genomes using whole-paranome distributions of estimated synonymous distances (K_S), patterns of within-genome co-linearity, and phylogenomic gene tree-species tree reconciliation methods. We observe an abundance of gene duplicates in the majority of these hexapod genomes, yet we find little evidence for WGD. The majority of gene duplicates seem to have originated through small-scale gene duplication processes. We did detect

SUBMITTER: Roelofs D 

PROVIDER: S-EPMC7251882 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature