Chromosomal Inversion Polymorphisms in Two Sympatric Ascidian Lineages.

ABSTRACT: Chromosomal rearrangements can reduce fitness of heterozygotes and can thereby prevent gene flow. Therefore, such rearrangements can play a role in local adaptation and speciation. In particular, inversions are considered to be a major potential cause for chromosomal speciation. There are two closely related, partially sympatric lineages of ascidians in the genus Ciona, which we call type-A and type-B animals in the present study. Although these invertebrate chordates are largely isolated reproductively, hybrids can be found in wild populations, suggesting incomplete prezygotic barriers. Although the genome of type-A animals has been decoded and widely used, the genome for type-B animals has not been decoded at the chromosomal level. In the present study, we sequenced the genomes of two ty

SUBMITTER: Satou Y 

PROVIDER: S-EPMC8186479 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature