{"id":71257,"date":"2025-09-17T12:00:00","date_gmt":"2025-09-17T12:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/senegal\/politique\/origine-genetique-de-la-couleur-orange-des-chats"},"modified":"2025-09-18T00:10:16","modified_gmt":"2025-09-18T00:10:16","slug":"origine-genetique-de-la-couleur-orange-des-chats","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats","title":{"rendered":"Origine G\u00e9n\u00e9tique de la Couleur Orange des Chats"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Senegal. <\/strong><\/span>Le chat roux est unique, nous en avons maintenant la preuve ! Des chercheurs ame\u0301ricains de Stanford Medicine ont identifie\u0301 la mutation ge\u0301ne\u0301tique responsable de la couleur orange des chats domestiques, une de\u0301couverte publie\u0301e le 15 mai 2025 dans la revue Current Biology. Cette mutation est unique aux chats et ne se retrouve chez aucun autre mammife\u0300re orange.<\/p>\n<p><b>Un ve\u0301ritable casse-te\u0302te ge\u0301ne\u0301tique<\/b><\/p>\n<p>Les scientifiques ont profite\u0301 de l\u2019immense varie\u0301te\u0301 de couleurs et de motifs de chats pour e\u0301tudier la ge\u0301ne\u0301tique depuis le de\u0301but du 20e sie\u0300cle, mais l\u2019identite\u0301 mole\u0301culaire de la mutation orange particulie\u0300re est reste\u0301e floue, devenant un ve\u0301ritable casse-te\u0302te ge\u0301ne\u0301tique.<\/p>\n<p>Chez les femelles, qui posse\u0300dent deux chromosomes X, la pre\u0301sence de cette mutation sur un seul chromosome entrai\u0302ne une robe e\u0301caille de tortue ou calico, en raison de l\u2019inactivation ale\u0301atoire d\u2019un des chromosomes X dans chaque cellule. Pour qu\u2019une femelle soit entie\u0300rement orange, elle doit he\u0301riter de la mutation sur les deux chromosomes X, une occurrence plus rare.<\/p>\n<p><b>Analyse de l\u2019ADN d\u2019une cinquantaine de chats<\/b><\/p>\n<p>Les scientifiques ont analyse\u0301 l\u2019ADN d\u2019une cinquantaine de chats et ont compare\u0301 les ge\u0301nomes de chats orange et non orange. Ils ont identifie\u0301 une petite de\u0301le\u0301tion ge\u0301ne\u0301tique qui active de manie\u0300re anormale le ge\u0300ne Arhgap36 dans les cellules pigmentaires des chats orange. Ce ge\u0300ne, normalement exprime\u0301 dans les tissus neuroendocriniens, n\u2019avait jamais e\u0301te\u0301 associe\u0301 a\u0300 la pigmentation auparavant.<\/p>\n<p>Une autre e\u0301quipe, japonaise, a aussi travaille\u0301 sur ce myste\u0300re ge\u0301ne\u0301tique en tombant sur le me\u0302me re\u0301sultat et publie\u0301 e\u0301galement dans la revue Current Biology. Pour mieux comprendre le travail des deux e\u0301quipes de chercheurs, rendez-vous sur cet article de La Recherche.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <span style=\"color: #ff6600\">Senegal<\/span>, suivez <span style=\"color: #ff6600\">Africa-Press<\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Senegal. Le chat roux est unique, nous en avons maintenant la preuve ! Des chercheurs ame\u0301ricains de Stanford Medicine ont identifie\u0301 la mutation ge\u0301ne\u0301tique responsable de la couleur orange des chats domestiques, une de\u0301couverte publie\u0301e le 15 mai 2025 dans la revue Current Biology. Cette mutation est unique aux chats et ne se [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":71256,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[44],"class_list":["post-71257","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-senegal-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Origine G\u00e9n\u00e9tique de la Couleur Orange des Chats - Senegal<\/title>\n<meta name=\"description\" content=\"Le chat roux est unique, nous en avons maintenant la preuve ! Des chercheurs ame\u0301ricains de Stanford Medicine ont identi ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Origine G\u00e9n\u00e9tique de la Couleur Orange des Chats\" \/>\n<meta property=\"og:description\" content=\"Le chat roux est unique, nous en avons maintenant la preuve ! Des chercheurs ame\u0301ricains de Stanford Medicine ont identi ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats\" \/>\n<meta property=\"og:site_name\" content=\"Senegal\" \/>\n<meta property=\"article:published_time\" content=\"2025-09-17T12:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-18T00:10:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/09\/sm_1758182904.125733.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"720\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Origine G\u00e9n\u00e9tique de la Couleur Orange des Chats\",\"datePublished\":\"2025-09-17T12:00:00+00:00\",\"dateModified\":\"2025-09-18T00:10:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats\"},\"wordCount\":346,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/09\/sm_1758182904.125733.jpg\",\"keywords\":[\"Senegal\"],\"articleSection\":[\"Divers\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats\",\"url\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats\",\"name\":\"Origine G\u00e9n\u00e9tique de la Couleur Orange des Chats - Senegal\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/09\/sm_1758182904.125733.jpg\",\"datePublished\":\"2025-09-17T12:00:00+00:00\",\"dateModified\":\"2025-09-18T00:10:16+00:00\",\"author\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"description\":\"Le chat roux est unique, nous en avons maintenant la preuve ! Des chercheurs ame\u0301ricains de Stanford Medicine ont identi ...\",\"breadcrumb\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#primaryimage\",\"url\":\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/09\/sm_1758182904.125733.jpg\",\"contentUrl\":\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/09\/sm_1758182904.125733.jpg\",\"width\":1280,\"height\":720,\"caption\":\"Origine G\u00e9n\u00e9tique de la Couleur Orange des Chats\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/www.africa-press.net\/senegal\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Origine G\u00e9n\u00e9tique de la Couleur Orange des Chats\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#website\",\"url\":\"https:\/\/www.africa-press.net\/senegal\/\",\"name\":\"Africa Press | Senegal | Homepage\",\"description\":\"Just another Africa News Agency Sites site\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.africa-press.net\/senegal\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\",\"name\":\"cfeditorfr\",\"url\":\"https:\/\/www.africa-press.net\/senegal\/author\/cfeditorfr\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Origine G\u00e9n\u00e9tique de la Couleur Orange des Chats - Senegal","description":"Le chat roux est unique, nous en avons maintenant la preuve ! Des chercheurs ame\u0301ricains de Stanford Medicine ont identi ...","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats","og_locale":"fr_FR","og_type":"article","og_title":"Origine G\u00e9n\u00e9tique de la Couleur Orange des Chats","og_description":"Le chat roux est unique, nous en avons maintenant la preuve ! Des chercheurs ame\u0301ricains de Stanford Medicine ont identi ...","og_url":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats","og_site_name":"Senegal","article_published_time":"2025-09-17T12:00:00+00:00","article_modified_time":"2025-09-18T00:10:16+00:00","og_image":[{"width":1280,"height":720,"url":"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/09\/sm_1758182904.125733.jpg","type":"image\/jpeg"}],"author":"cfeditorfr","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"cfeditorfr","Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#article","isPartOf":{"@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats"},"author":{"name":"cfeditorfr","@id":"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1"},"headline":"Origine G\u00e9n\u00e9tique de la Couleur Orange des Chats","datePublished":"2025-09-17T12:00:00+00:00","dateModified":"2025-09-18T00:10:16+00:00","mainEntityOfPage":{"@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats"},"wordCount":346,"commentCount":0,"image":{"@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#primaryimage"},"thumbnailUrl":"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/09\/sm_1758182904.125733.jpg","keywords":["Senegal"],"articleSection":["Divers","Toutes les actualit\u00e9s"],"inLanguage":"fr-FR","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats","url":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats","name":"Origine G\u00e9n\u00e9tique de la Couleur Orange des Chats - Senegal","isPartOf":{"@id":"https:\/\/www.africa-press.net\/senegal\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#primaryimage"},"image":{"@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#primaryimage"},"thumbnailUrl":"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/09\/sm_1758182904.125733.jpg","datePublished":"2025-09-17T12:00:00+00:00","dateModified":"2025-09-18T00:10:16+00:00","author":{"@id":"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1"},"description":"Le chat roux est unique, nous en avons maintenant la preuve ! Des chercheurs ame\u0301ricains de Stanford Medicine ont identi ...","breadcrumb":{"@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#primaryimage","url":"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/09\/sm_1758182904.125733.jpg","contentUrl":"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/09\/sm_1758182904.125733.jpg","width":1280,"height":720,"caption":"Origine G\u00e9n\u00e9tique de la Couleur Orange des Chats"},{"@type":"BreadcrumbList","@id":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/origine-genetique-de-la-couleur-orange-des-chats#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/www.africa-press.net\/senegal\/"},{"@type":"ListItem","position":2,"name":"Origine G\u00e9n\u00e9tique de la Couleur Orange des Chats"}]},{"@type":"WebSite","@id":"https:\/\/www.africa-press.net\/senegal\/#website","url":"https:\/\/www.africa-press.net\/senegal\/","name":"Africa Press | Senegal | Homepage","description":"Just another Africa News Agency Sites site","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.africa-press.net\/senegal\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Person","@id":"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1","name":"cfeditorfr","url":"https:\/\/www.africa-press.net\/senegal\/author\/cfeditorfr"}]}},"_links":{"self":[{"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/posts\/71257","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/users\/82"}],"replies":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/comments?post=71257"}],"version-history":[{"count":0,"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/posts\/71257\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/media\/71256"}],"wp:attachment":[{"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/media?parent=71257"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/categories?post=71257"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.africa-press.net\/senegal\/wp-json\/wp\/v2\/tags?post=71257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}