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dc.contributor.authorQuinn, Alexander E
dc.contributor.authorSarre, Stephen D
dc.contributor.authorEzaz, Tariq
dc.contributor.authorGraves, Jennifer A Marshall
dc.contributor.authorGeorges, Arthur
dc.date.accessioned2017-07-28T00:10:58Z
dc.date.available2017-07-28T00:10:58Z
dc.date.issued2011
dc.identifier.issn1744-9561
dc.identifier.doi10.1098/rsbl.2010.1126
dc.identifier.urihttp://hdl.handle.net/10072/342714
dc.description.abstractSex in many organisms is a dichotomous phenotype—individuals are either male or female. The molecular pathways underlying sex determination are governed by the genetic contribution of parents to the zygote, the environment in which the zygote develops or interaction of the two, depending on the species. Systems in which multiple interacting influences or a continuously varying influence (such as temperature) determines a dichotomous outcome have at least one threshold. We show that when sex is viewed as a threshold trait, evolution in that threshold can permit novel transitions between genotypic and temperature-dependent sex determination (TSD) and remarkably, between male (XX/XY) and female (ZZ/ZW) heterogamety. Transitions are possible without substantive genotypic innovation of novel sex-determining mutations or transpositions, so that the master sex gene and sex chromosome pair can be retained in ZW–XY transitions. We also show that evolution in the threshold can explain all observed patterns in vertebrate TSD, when coupled with evolution in embryonic survivorship limits.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherThe Royal Society
dc.relation.ispartofpagefrom443
dc.relation.ispartofpageto448
dc.relation.ispartofissue3
dc.relation.ispartofjournalBiology letters
dc.relation.ispartofvolume7
dc.subject.fieldofresearchBiological sciences
dc.subject.fieldofresearchEvolutionary biology not elsewhere classified
dc.subject.fieldofresearchcode31
dc.subject.fieldofresearchcode310499
dc.titleEvolutionary transitions between mechanisms of sex determination in vertebrates
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorQuinn, Alex E.


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