The Hypolimnas misippus Genome Supports a Common Origin of the W Chromosome in Lepidoptera.

ABSTRACT: Moths and butterflies (Lepidoptera) have a heterogametic sex chromosome system with females carrying ZW chromosomes and males ZZ. The lack of W chromosomes in early-diverging lepidopteran lineages has led to the suggestion of an ancestral Z0 system in this clade and a B chromosome origin of the W. This contrasts with the canonical model of W chromosome evolution in which the W would have originated from the same homologous autosomal pair as the Z chromosome. Despite the distinct models proposed, the rapid evolution of the W chromosome has hindered the elucidation of its origin. Here, we present high-quality, chromosome-level genome assemblies of 2 Hypolimnas species (Hypolimnas misippus and Hypolimnas bolina) and use the H. misippus assembly to explore the evolution of W chromosomes in but

SUBMITTER: Orteu A 

PROVIDER: S-EPMC11523094 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature