Journal article
The multiple sex chromosomes of platypus and echidna are not completely identical and several share homology with the avian Z
Abstract
BackgroundSex-determining systems have evolved independently in vertebrates. Placental mammals and marsupials have an XY system, birds have a ZW system. Reptiles and amphibians have different systems, including temperature-dependent sex determination, and XY and ZW systems that differ in origin from birds and placental mammals. Monotremes diverged early in mammalian evolution, just after the mammalian clade diverged from the sauropsid clade. …
Authors
Rens W; O'Brien PC; Grützner F; Clarke O; Graphodatskaya D; Tsend-Ayush E; Trifonov VA; Skelton H; Wallis MC; Johnston S
Journal
Genome Biology, Vol. 8, No. 11,
Publisher
Springer Nature
Publication Date
2007
DOI
10.1186/gb-2007-8-11-r243
ISSN
1474-760X