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{'id': 'https://openalex.org/W2162469246', 'doi': 'https://doi.org/10.1073/pnas.1730757100', 'title': 'Allopatric genetic origins for sympatric host-plant shifts and race formation in <i>Rhagoletis</i>', 'display_name': 'Allopatric genetic origins for sympatric host-plant shifts and race formation in <i>Rhagoletis</i>', 'publication_year': 2003, 'publication_date': '2003-08-19', 'ids': {'openalex': 'https://openalex.org/W2162469246', 'doi': 'https://doi.org/10.1073/pnas.1730757100', 'mag': '2162469246', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/12928500', 'pmcid': 'https://www.ncbi.nlm.nih.gov/pmc/articles/193558'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1073/pnas.1730757100', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S125754415', 'display_name': 'Proceedings of the National Academy of Sciences', 'issn_l': '0027-8424', 'issn': ['0027-8424', '1091-6490'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320052', 'host_organization_name': 'National Academy of Sciences', 'host_organization_lineage': ['https://openalex.org/P4310320052'], 'host_organization_lineage_names': ['National Academy of Sciences'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': True, 'oa_status': 'green', 'oa_url': 'https://europepmc.org/articles/pmc193558?pdf=render', 'any_repository_has_fulltext': True}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5073363693', 'display_name': 'Jeffrey L. 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