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dc.contributor.authorRitchie, PA
dc.contributor.authorMillar, CD
dc.contributor.authorGibb, GC
dc.contributor.authorBaroni, C
dc.contributor.authorLambert, DM
dc.date.accessioned2017-05-03T14:39:02Z
dc.date.available2017-05-03T14:39:02Z
dc.date.issued2004
dc.date.modified2010-01-15T06:14:52Z
dc.identifier.issn0737-4038
dc.identifier.doi10.1093/molbev/msh012
dc.identifier.urihttp://hdl.handle.net/10072/28303
dc.description.abstractThe timing of divergent events in history is one of the central goals of contemporary evolutionary biology. Such studies are however dependent on accurate evolutionary rates. Recent developments in ancient DNA analysis enable the estimation of more accurate evolutionary rates and therefore more accurate timing of divergence events. Consequently, this leads to a better understanding of changes in populations through time. We use an evolutionary rate calculated from ancient DNA of Adelie penguins (Pygoscelis adeliae) to time divergent events in their history. We report the presence of two distinct and highly variable mitochondrial DNA lineages and track changes in these lineages through space and time. When the ancient DNA and the phylogenetic rates are used to estimate the time of origin of the lineages, two very different estimates resulted. In addition, these same rates provide very different estimates of the time of expansion of these lineages. We suggest that the rate calculated from ancient DNA is more consistent with the glacial history of Antarctica and requires fewer assumptions than does a narrative based on the phylogenetic rate. Finally, we suggest that our study indicates an important new role for ancient DNA studies in the timing of divergent events in history.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherOxford University Press
dc.publisher.placeUK
dc.relation.ispartofpagefrom240
dc.relation.ispartofpageto248
dc.relation.ispartofissue2
dc.relation.ispartofjournalMolecular Biology and Evolution
dc.relation.ispartofvolume21
dc.subject.fieldofresearchBiochemistry and cell biology
dc.subject.fieldofresearchEvolutionary biology
dc.subject.fieldofresearchGenetics
dc.subject.fieldofresearchMolecular evolution
dc.subject.fieldofresearchcode3101
dc.subject.fieldofresearchcode3104
dc.subject.fieldofresearchcode3105
dc.subject.fieldofresearchcode310510
dc.titleAncient DNA enables timing of the Pleistocene origin and Holocene expansion of two Adélie penguin lineages in Antarctica
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2004
gro.hasfulltextNo Full Text
gro.griffith.authorLambert, David M.


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