Evolution, Inheritance, and Strata Formation of the W Chromosome in Duck (Anas platyrhynchos).

ABSTRACT: The nonrecombining female-limited W chromosome is predicted to experience unique evolutionary processes. Difficulties in assembling W chromosome sequences have hindered the identification of duck W-linked sequences and their evolutionary footprint. To address this, we conducted three initial contig-level genome assemblies and developed a rigorous pipeline by which to successfully expand the W-linked data set, including 11 known genes and 24 newly identified genes. Our results indicate that the W chromosome expression may not be subject to female-specific selection; a significant convergent pattern of upregulation associated with increased female-specific selection was not detected. The genetic stability of the W chromosome is also reflected in the strong evolutionary correlation between it

SUBMITTER: Gu H 

PROVIDER: S-EPMC10630070 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature