Degradation of the Repetitive Genomic Landscape in a Close Relative of Caenorhabditis elegans.

ABSTRACT: The abundance, diversity, and genomic distribution of repetitive elements is highly variable among species. These patterns are thought to be driven in part by reproductive mode and the interaction of selection and recombination, and recombination rates typically vary by chromosomal position. In the nematode Caenorhabditis elegans, repetitive elements are enriched at chromosome arms and depleted on centers, and this mirrors the chromosomal distributions of other genomic features such as recombination rate. How conserved is this genomic landscape of repeats, and what evolutionary forces maintain it? To address this, we compared the genomic organization of repetitive elements across five Caenorhabditis species with chromosome-level assemblies. As previously reported, repeat content is enriche

SUBMITTER: Woodruff GC 

PROVIDER: S-EPMC7475029 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature