{"id":71518,"date":"2025-10-03T12:00:00","date_gmt":"2025-10-03T12:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/senegal\/politique\/faconnement-du-genome-du-cheval-par-lhomme"},"modified":"2025-10-05T01:57:51","modified_gmt":"2025-10-05T01:57:51","slug":"faconnement-du-genome-du-cheval-par-lhomme","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/faconnement-du-genome-du-cheval-par-lhomme","title":{"rendered":"Fa\u00e7onnement du G\u00e9nome du Cheval par L\u2019Homme"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Senegal. <\/strong><\/span>Le cheval a e\u0301te\u0301 se\u0301lectionne\u0301 pour servir de monture et cela se voit dans son ge\u0301nome, montre une e\u0301tude mene\u0301e par une collaboration franco-chinoise de ge\u0301ne\u0301ticiens et publie\u0301e dans la revue Science. La comparaison du ge\u0301nome d\u2019ossements de chevaux anciens avait de\u0301ja\u0300 permis de localiser l\u2019origine de l\u2019animal actuel dans les steppes d\u2019Asie centrale, au nord de la mer Caspienne. Mais elle a aussi re\u0301ve\u0301le\u0301 les modifications ge\u0301ne\u0301tiques progressives lie\u0301es a\u0300 une domestication de\u0301bute\u0301e il y a plus de 5 000 ans, bien apre\u0300s celle des autres animaux de la ferme.<\/p>\n<p><b>Une se\u0301lection des chevaux les plus dociles et plus muscle\u0301s<\/b><\/p>\n<p>L\u2019animal, jusque-la\u0300 parque\u0301 pour e\u0302tre une source de viande et de lait, fait d\u2019abord l\u2019objet d\u2019une se\u0301lection pour retenir les individus moins craintifs et plus dociles, porteurs d\u2019un premier variant ge\u0301ne\u0301tique lie\u0301 a\u0300 la prote\u0301ine ZFPM1. Puis un autre variant ge\u0301ne\u0301tique associe\u0301 a\u0300 une diminution de la prote\u0301ine GSDMC est fortement se\u0301lectionne\u0301 par les e\u0301leveurs au fil des sie\u0300cles car il confe\u0300re aux chevaux qui le posse\u0300dent un arrie\u0300re-train plus robuste, des pattes avant plus muscle\u0301es et une meilleure coordination motrice.<\/p>\n<p>Ces nouvelles proprie\u0301te\u0301s ont e\u0301te\u0301 confirme\u0301es chez la souris quand les chercheurs y ont re\u0301duit la production de GSDMC. Le cheval issu de cette se\u0301lection pouvait alors mieux supporter la charge d\u2019un cavalier et courir sur de longues distances, ce qui va en faire un formidable agent de transport et de conque\u0302te pour l\u2019humanite\u0301 pendant pre\u0300s de quatre mille\u0301naires.<\/p>\n<p><b>Tous les chevaux actuels descendent d\u2019individus choisis par l\u2019humain<\/b><\/p>\n<p>Vers 900 ans avant notre e\u0300re, la se\u0301lection humaine va encore orienter le ge\u0301nome des chevaux en faveur d\u2019individus de plus grande taille, ce qui coi\u0308ncide selon les auteurs de l\u2019e\u0301tude avec l\u2019apparition des premie\u0300res troupes a\u0300 cheval.<\/p>\n<p>Plus tard, les variants responsables des couleurs blanche et marron du pelage apparaissent dans les populations de chevaux, toujours sous l\u2019effet de la se\u0301lection humaine. Tous les chevaux actuels descendent ainsi d\u2019individus se\u0301lectionne\u0301s initialement par l\u2019humain pour leur aptitude au portage et ceux-ci ont fini par supplanter les autres populations chevalines he\u0301rite\u0301es de la pre\u0301histoire qui peuplaient autrefois la plane\u0300te.<\/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 cheval a e\u0301te\u0301 se\u0301lectionne\u0301 pour servir de monture et cela se voit dans son ge\u0301nome, montre une e\u0301tude mene\u0301e par une collaboration franco-chinoise de ge\u0301ne\u0301ticiens et publie\u0301e dans la revue Science. La comparaison du ge\u0301nome d\u2019ossements de chevaux anciens avait de\u0301ja\u0300 permis de localiser l\u2019origine de l\u2019animal actuel dans les steppes [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":71517,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[44],"class_list":["post-71518","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>Fa\u00e7onnement du G\u00e9nome du Cheval par L\u2019Homme - Senegal<\/title>\n<meta name=\"description\" content=\"Le cheval a e\u0301te\u0301 se\u0301lectionne\u0301 pour servir de monture et cela se voit dans son ge\u0301nome, montre une e\u0301tude mene\u0301e par un ...\" \/>\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\/faconnement-du-genome-du-cheval-par-lhomme\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fa\u00e7onnement du G\u00e9nome du Cheval par L\u2019Homme\" \/>\n<meta property=\"og:description\" content=\"Le cheval a e\u0301te\u0301 se\u0301lectionne\u0301 pour servir de monture et cela se voit dans son ge\u0301nome, montre une e\u0301tude mene\u0301e par un ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/faconnement-du-genome-du-cheval-par-lhomme\" \/>\n<meta property=\"og:site_name\" content=\"Senegal\" \/>\n<meta property=\"article:published_time\" content=\"2025-10-03T12:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-05T01:57:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/10\/sm_1759657078.80166.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\/faconnement-du-genome-du-cheval-par-lhomme#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/faconnement-du-genome-du-cheval-par-lhomme\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Fa\u00e7onnement du G\u00e9nome du Cheval par L\u2019Homme\",\"datePublished\":\"2025-10-03T12:00:00+00:00\",\"dateModified\":\"2025-10-05T01:57:51+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/faconnement-du-genome-du-cheval-par-lhomme\"},\"wordCount\":446,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/faconnement-du-genome-du-cheval-par-lhomme#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/10\/sm_1759657078.80166.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\/faconnement-du-genome-du-cheval-par-lhomme#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/faconnement-du-genome-du-cheval-par-lhomme\",\"url\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/faconnement-du-genome-du-cheval-par-lhomme\",\"name\":\"Fa\u00e7onnement du G\u00e9nome du Cheval par L\u2019Homme - 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