The timing of genetic degeneration of sex chromosomes

D Charlesworth - … Transactions of the Royal Society B, 2021 - royalsocietypublishing.org
Genetic degeneration is an extraordinary feature of sex chromosomes, with the loss of
functions of Y-linked genes in species with XY systems, and W-linked genes in ZW systems …

Comparative genomics reveals the dynamics of chromosome evolution in Lepidoptera

CJ Wright, L Stevens, A Mackintosh… - Nature Ecology & …, 2024 - nature.com
Chromosomes are a central unit of genome organization. One-tenth of all described species
on Earth are butterflies and moths, the Lepidoptera, which generally possess 31 …

Evolution of sex determination and sex chromosomes: a novel alternative paradigm

RP Meisel - BioEssays, 2020 - Wiley Online Library
Sex chromosomes can differ between species as a result of evolutionary turnover, a process
that can be driven by evolution of the sex determination pathway. Canonical models of sex …

High-density linkage maps and chromosome level genome assemblies unveil direction and frequency of extensive structural rearrangements in wood white butterflies …

L Höök, K Näsvall, R Vila, C Wiklund… - Chromosome Research, 2023 - Springer
Karyotypes are generally conserved between closely related species and large
chromosome rearrangements typically have negative fitness consequences in …

The deep conservation of the Lepidoptera Z chromosome suggests a non-canonical origin of the W

C Fraïsse, MAL Picard, B Vicoso - Nature Communications, 2017 - nature.com
Moths and butterflies (Lepidoptera) usually have a pair of differentiated WZ sex
chromosomes. However, in most lineages outside of the division Ditrysia, as well as in the …

A telomere-to-telomere assembly of Oscheius tipulae and the evolution of rhabditid nematode chromosomes

PM Gonzalez de la Rosa, M Thomson, U Trivedi… - G3, 2021 - academic.oup.com
Eukaryotic chromosomes have phylogenetic persistence. In many taxa, each chromosome
has a single functional centromere with essential roles in spindle attachment and …

Recurrent chromosome reshuffling and the evolution of neo-sex chromosomes in parrots

Z Huang, I De O. Furo, J Liu, V Peona… - Nature …, 2022 - nature.com
The karyotype of most birds has remained considerably stable during more than 100 million
years' evolution, except for some groups, such as parrots. The evolutionary processes and …

Unprecedented reorganization of holocentric chromosomes provides insights into the enigma of lepidopteran chromosome evolution

J Hill, P Rastas, EA Hornett, R Neethiraj, N Clark… - Science …, 2019 - science.org
Chromosome evolution presents an enigma in the mega-diverse Lepidoptera. Most species
exhibit constrained chromosome evolution with nearly identical haploid chromosome counts …

Dichotomy of dosage compensation along the neo Z chromosome of the monarch butterfly

L Gu, PF Reilly, JJ Lewis, RD Reed, P Andolfatto… - Current Biology, 2019 - cell.com
Mechanisms of sex chromosome dosage compensation (SCDC) differ strikingly among
animals. In Drosophila flies, chromosome-wide transcription is doubled from the single X …

Support for faster and more adaptive Z chromosome evolution in two divergent lepidopteran lineages

AJ Mongue, ME Hansen, JR Walters - Evolution, 2022 - academic.oup.com
The rateof divergence for Z or X chromosomes is usually observed to be greater than
autosomes, but the proposed evolutionary causes for this pattern vary, as do empirical …