title: Multiple independent origins of sex chromosomes in amniotes.
authors.affiliation: New England Primate Research Center, Division of Neurochemistry, Harvard Medical School, Southborough, MA 01772-9102, USA. eric.vallender@hms.harvard.edu
authors.forename: Eric J
authors.initials: EJ
authors.lastname: Vallender
authors.forename: Bruce T
authors.initials: BT
authors.lastname: Lahn
mesh_terms: D000650:Amnion / Q000378:metabolism*; D000818:Animals; D005075:Biological Evolution; D000069497:Origin of Life; D012730:Sex Chromosomes / Q000235:genetics*; D019849:Sex Determination Processes