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However, this distinction, clear as it may seem, is neither universally agreed upon, nor free of critical issues. In consideration of the role of sex anomalies in understanding normal development, we reassess these phenomena of abnormal sexual development, taking into consideration the more recent advances in the study of sex determination and sexual differentiation. We argue that a distinction between gynandromorphism and intersexuality, although useful for descriptive purposes, is not always possible or sensible. We discuss the conceptual and terminological intricacies of the literature on this subject and provide reasons for largely, although not strictly, preferring a terminology based on descriptive rather than causal morphology, that is, on the observed phenotypic patterns rather on the causal process behind them.<\/jats:p>","DOI":"10.1007\/s12064-023-00385-1","type":"journal-article","created":{"date-parts":[[2023,1,12]],"date-time":"2023-01-12T11:11:53Z","timestamp":1673521913000},"page":"1-11","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Descriptive versus causal morphology: gynandromorphism and intersexuality"],"prefix":"10.1007","volume":"142","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4690-6049","authenticated-orcid":false,"given":"Giuseppe","family":"Fusco","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3387-1489","authenticated-orcid":false,"given":"Alessandro","family":"Minelli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,1,12]]},"reference":[{"key":"385_CR1","first-page":"1","volume":"24","author":"JD Agnew","year":"1979","unstructured":"Agnew JD (1979) Gynanders and sex determination in Ephemeroptera. 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