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dc.contributor.authorBetti, Lia
dc.contributor.authorManica, Andrea
dc.date.accessioned2018-12-07T00:31:23Z
dc.date.available2018-12-07T00:31:23Z
dc.date.issued2018-10-24
dc.identifier.issn0962-8452
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/286409
dc.description.abstractThe human birth canal shows a tight fit with the size of the neonate, which can lead to obstetric complications. This is not the case in other apes, and has been explained as the outcome of conflicting evolutionary pressures for bipedal locomotion and parturition of a highly encephalized fetus. Despite the suggested evolutionary constraints on the female pelvis, we show that women are, in fact, extremely variable in the shape of the bony birth canal, with human populations having differently shaped pelvic canals. Neutral evolution through genetic drift and differential migration are largely responsible for the observed pattern of morphological diversity, which correlates well with neutral genetic diversity. Climatic adaptation might have played a role, albeit a minor one, with populations from colder regions showing a more transversally oval shape of the canal inlet. The significant extent of canal shape variation among women from different regions of the world has important implications for modern obstetric practice in multi-ethnic societies, as modern medical understanding has been largely developed on studies of European women.
dc.format.mediumElectronic
dc.languageeng
dc.publisherThe Royal Society
dc.subjectPelvis
dc.subjectHumans
dc.subjectGenetic Drift
dc.subjectGeography
dc.subjectFemale
dc.subjectBiological Evolution
dc.titleHuman variation in the shape of the birth canal is significant and geographically structured.
dc.typeArticle
prism.issueIdentifier1889
prism.publicationDate2018
prism.publicationNameProc Biol Sci
prism.volume285
dc.identifier.doi10.17863/CAM.33719
dcterms.dateAccepted2018-10-03
rioxxterms.versionofrecord10.1098/rspb.2018.1807
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2018-10-24
dc.contributor.orcidBetti, Lia [0000-0003-2895-9718]
dc.contributor.orcidManica, Andrea [0000-0003-1895-450X]
dc.identifier.eissn1471-2954
rioxxterms.typeJournal Article/Review
cam.issuedOnline2018-10-24
rioxxterms.freetoread.startdate2019-10-24


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