Genomic signatures of recombination in a natural population of the bdelloid rotifer Adineta vaga.

ABSTRACT: Sexual reproduction is almost ubiquitous among extant eukaryotes. As most asexual lineages are short-lived, abandoning sex is commonly regarded as an evolutionary dead end. Still, putative anciently asexual lineages challenge this view. One of the most striking examples are bdelloid rotifers, microscopic freshwater invertebrates believed to have completely abandoned sexual reproduction tens of Myr ago. Here, we compare whole genomes of 11 wild-caught individuals of the bdelloid rotifer Adineta vaga and present evidence that some patterns in its genetic variation are incompatible with strict clonality and lack of genetic exchange. These patterns include genotype proportions close to Hardy-Weinberg expectations within loci, lack of linkage disequilibrium between distant loci, incongruent hap

SUBMITTER: Vakhrusheva OA 

PROVIDER: S-EPMC7749112 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature