The tortured past of young polymorphic sex chromosomes revealed through multiple de novo genome assemblies of the mountain pine beetle. - Lagunas-Robles G; Bentz BJ; Verma M; Vandygriff J; Hansen M; Simmonds T; Corpuz R; Kauwe A; Geib S; Bracewell RR (BioRxiv : the preprint server for biology, 2026)