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Specifically, older adults exhibited a slender helix and antihelix especially in the lower region. Interestingly, the helix showed elongation, while the antihelix became shorter, and the tragus position shifted upwards. While linear measurements increased with age, the overall size (centroid size) remained constant. Although ethnicity displayed greater variability in ear shape compared to age and size, our analysis using Principal Component Analysis and random forest models did not reveal statistically significant differences between the four ethnic groups.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>\n                      <jats:italic toggle=\"yes\">Conclusion<\/jats:italic>\n                    <\/jats:title>\n                    <jats:p>This study suggests that genetic factors play a relatively minor role in shaping ear variation, similar to other cranial features.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/10556656241266462","type":"journal-article","created":{"date-parts":[[2024,12,13]],"date-time":"2024-12-13T02:37:11Z","timestamp":1734057431000},"page":"1560-1567","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Geometric Morphometric Study of ear Shape in Four Chinese Ethnic Minority Populations"],"prefix":"10.1177","volume":"62","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4742-4316","authenticated-orcid":false,"given":"Haijun","family":"Li","sequence":"first","affiliation":[{"name":"School of Ethnology and Sociology, Minzu University of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7055-4709","authenticated-orcid":false,"given":"Yameng","family":"Zhang","sequence":"additional","affiliation":[{"name":"Shandong University"},{"name":"Shandong University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2024,12,12]]},"reference":[{"key":"e_1_3_4_2_2","doi-asserted-by":"publisher","DOI":"10.1038\/ncomms8500"},{"key":"e_1_3_4_3_2","doi-asserted-by":"publisher","DOI":"10.1145\/2431211.2431221"},{"key":"e_1_3_4_4_2","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.10814"},{"key":"e_1_3_4_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/ar.a.20118"},{"key":"e_1_3_4_6_2","first-page":"108","article-title":"The influence of physical conditions in the genesis of species","volume":"1","author":"Allen JA","year":"1877","unstructured":"Allen JA. 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