Lineage-specific patterns of chromosome evolution are the rule not the exception in Polyneoptera insects.

ABSTRACT: The structure of a genome can be described at its simplest by the number of chromosomes and the sex chromosome system it contains. Despite over a century of study, the evolution of genome structure on this scale remains recalcitrant to broad generalizations that can be applied across clades. To address this issue, we have assembled a dataset of 823 karyotypes from the insect group Polyneoptera. This group contains orders with a range of variations in chromosome number, and offer the opportunity to explore the possible causes of these differences. We have analysed these data using both phylogenetic and taxonomic approaches. Our analysis allows us to assess the importance of rates of evolution, phylogenetic history, sex chromosome systems, parthenogenesis and genome size on variation in chro

SUBMITTER: Sylvester T 

PROVIDER: S-EPMC7542826 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature