The abstract is read at the publisher; the summary is JClub's.
Leaf beetles (Chrysomelidae) show extensive chromosome reshaping, and synteny analyses identify 37 species (~19.5%) with patterns consistent with neo-sex chromosomes.
- Why it matters: Beetles have highly variable karyotypes, but it remains unclear how much deep ancestral chromosome structure persists versus being repeatedly remodeled during evolution.
- What they did: The study compared 190 chromosome-level genome assemblies across 39 families and 16 superfamilies, assessing conservation of Stevens elements, detecting neo-sex chromosomes, and linking changes to TE composition.
- The result: Stevens elements are conserved across much of the radiation for over 200 million years, while neo-sex chromosomes include X-autosome fusions with an ancestral X conserved for over 300 million years and reduced TEs.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.