Príncia Grejo Setti, Geize Aparecida Deon, Rodrigo Zeni Dos Santos, Caio Augusto Gomes Goes, Analía Del Valle Garnero, Ricardo José Gunski, Edivaldo Herculano Corrêa de Oliveira, Fábio Porto-Foresti, Thales Renato Ochotorena de Freitas, Fábio Augusto Oliveira Silva, Thomas Liehr, Ricardo Utsunomia, Rafael Kretschmer, Marcelo de Bello Cioffi
BACKGROUND: Different patterns of sex chromosome differentiation are seen in Palaeognathae birds, a lineage that includes the ratites (Struthioniformes, Rheiformes, Apterygiformes, Casuariiformes, and the sister group Tinamiformes). While some Tinamiform species have well-differentiated W chromosomes, both Z and W of all the flightless ratites are still morphologically undifferentiated. Here, we conducted a comprehensive analysis of the ZW differentiation in birds using a combination of cytogenetic, genomic, and bioinformatic approaches...
April 23, 2024: BMC ecology and evolution