{"id":5978,"date":"2026-03-25T00:10:00","date_gmt":"2026-03-25T07:10:00","guid":{"rendered":"https:\/\/buenosdiasbcs.com\/?p=5978"},"modified":"2026-03-24T19:12:02","modified_gmt":"2026-03-25T02:12:02","slug":"modifican-el-adn-de-pollos-de-corral-y-logran-que-desarrollen-un-rasgo-propio-de-los-dinosaurios","status":"publish","type":"post","link":"https:\/\/buenosdiasbcs.com\/?p=5978","title":{"rendered":"Modifican el ADN de pollos de corral y logran que desarrollen un rasgo propio de los dinosaurios"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"h-el-descubrimiento-arroja-luz-sobre-la-evolucion-de-las-aves-y-de-sus-ancestros-el-trabajo-se-hacentrado-sobre-el-famoso-gen-sonic-hedgehog-que-es-clave-en-el-desarrollo-embrionario\">El descubrimiento arroja luz sobre la evoluci\u00f3n de las aves y de sus ancestros. El trabajo se hacentrado sobre el famoso gen &#8216;Sonic Hedgehog&#8217;, que es clave en el desarrollo embrionario<\/h2>\n\n\n\n<p>Un experimento gen\u00e9tico&nbsp;<a href=\"https:\/\/journals.plos.org\/plosbiology\/article?id=10.1371\/journal.pbio.3003061\" target=\"_blank\" rel=\"noreferrer noopener\">publicado en la revista cient\u00edfica PLOS Biology<\/a>&nbsp;ha logrado modificar el ADN de pollos para que&nbsp;<strong>desarrollen plumas primitivas similares a las de los dinosaurios<\/strong>. Un hallazgo que arroja nueva luz sobre la evoluci\u00f3n de las aves y sus ancestros prehist\u00f3ricos.&nbsp;<\/p>\n\n\n\n<p>El trabajo,&nbsp;<a href=\"https:\/\/www.unige.ch\/medias\/en\/2025\/des-dinosaures-aux-oiseaux-lorigine-de-la-formation-des-plumes\" target=\"_blank\" rel=\"noreferrer noopener\">liderado por investigadores de la Universidad de Ginebra<\/a>, se centra en la manipulaci\u00f3n del conocido gen&nbsp;<em><a href=\"https:\/\/www.elconfidencial.com\/bienestar\/2024-10-18\/trifalia-extrano-caso-genetico-sufrio-hombre-sin-saberlo-1qrt_3985634\/\">Sonic Hedgehog<\/a><\/em>, una pieza clave en el desarrollo embrionario. Al interferir en su funcionamiento durante una fase cr\u00edtica,&nbsp;<strong>los cient\u00edficos lograron alterar temporalmente la formaci\u00f3n de las plumas&nbsp;<\/strong>en embriones de pollo.&nbsp;<\/p>\n\n\n\n<p>Los resultados fueron llamativos desde las primeras etapas. En lugar de desarrollar las complejas estructuras ramificadas t\u00edpicas de las aves actuales,&nbsp;<strong>los embriones mostraron plumas m\u00e1s simples<\/strong>, con forma tubular, similares a las denominadas&nbsp;<em>protoplumas<\/em>&nbsp;que surgieron hace unos 250 millones de a\u00f1os en los primeros&nbsp;<a href=\"https:\/\/www.elconfidencial.com\/tecnologia\/ciencia\/2026-02-23\/fosil-espinosaurio-garza-infernal-sahara-1qrt_4306906\/\">dinosaurios<\/a>.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-un-retroceso-evolutivo-temporal-en-laboratorio\">Un retroceso evolutivo temporal en laboratorio<\/h2>\n\n\n\n<p>Para observar estos cambios con precisi\u00f3n, el equipo emple\u00f3 t\u00e9cnicas avanzadas como la&nbsp;<em>microscop\u00eda de fluorescencia de l\u00e1mina de luz<\/em>, que permite&nbsp;<strong>visualizar el desarrollo de tejidos en tiempo real<\/strong>. As\u00ed pudieron comprobar c\u00f3mo las estructuras iniciales de las&nbsp;<a href=\"https:\/\/www.elconfidencial.com\/tecnologia\/ciencia\/2019-01-21\/pavos-reales-plumas-para-que-sriven_1772994\/\">plumas<\/a>, conocidas como&nbsp;<em>placodas<\/em>, evolucionaban de forma distinta bajo la alteraci\u00f3n gen\u00e9tica.&nbsp;<\/p>\n\n\n\n<p>La intervenci\u00f3n consisti\u00f3 en introducir un&nbsp;<strong>inhibidor del gen&nbsp;<em>Sonic Hedgehog<\/em>en los huevos en el noveno d\u00eda de desarrollo<\/strong>. A partir de ese momento,&nbsp;<strong>el crecimiento de las plumas se ralentiz\u00f3 y su estructura perdi\u00f3 complejidad<\/strong>, dando lugar a zonas sin plumaje o con una cobertura m\u00e1s rudimentaria.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" data-src=\"https:\/\/images.ecestaticos.com\/7RAGnRWtBLbnznJP9GY7eJI_DK0=\/0x0:938x703\/1200x900\/filters:fill(white):format(jpg)\/f.elconfidencial.com%2Foriginal%2F4ca%2Fc8c%2Ffea%2F4cac8cfeae11edbb7945d839c3796c99.jpg\" alt=\"Foto: diente-66m-anos-depredador-rio-autobus-1qrt\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" \/><\/figure>\n\n\n\n<p>Sin embargo,&nbsp;<strong>este efecto no fue permanente<\/strong>. A medida que el desarrollo embrionario avanzaba, la actividad gen\u00e9tica se normaliz\u00f3 y las plumas comenzaron a recuperar su forma habitual. Tras la eclosi\u00f3n, los pollos presentaban un aspecto irregular, pero semanas despu\u00e9s mudaron y&nbsp;<strong>desarrollaron un plumaje completamente normal<\/strong>.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-claves-para-entender-el-origen-de-las-plumas\">Claves para entender el origen de las plumas<\/h2>\n\n\n\n<p>Este comportamiento pone de manifiesto&nbsp;<strong>la robustez del sistema gen\u00e9tico que regula el desarrollo de las plumas<\/strong>. Tal y como explic\u00f3 el investigador&nbsp;<a href=\"https:\/\/www.lanevol.org\/who\/people\/milinkovitch\" target=\"_blank\" rel=\"noreferrer noopener\">Michel Milinkovitch<\/a>: &#8220;Nuestros experimentos muestran que es mucho m\u00e1s dif\u00edcil alterar de forma permanente el desarrollo de las plumas&#8221;. Esta resistencia evolutiva sugiere que&nbsp;<strong>el proceso se ha refinado durante millones de a\u00f1os<\/strong>.&nbsp;<\/p>\n\n\n\n<p>M\u00e1s all\u00e1 de los resultados visibles, el estudio aporta informaci\u00f3n clave sobre&nbsp;<strong>c\u00f3mo las plumas evolucionaron desde estructuras simples hasta las complejas formas actuales<\/strong>. Comprender el papel del gen Sonic Hedgehog permite a los cient\u00edficos reconstruir parte del proceso evolutivo que conecta a los dinosaurios con las aves modernas.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>El descubrimiento arroja luz sobre la evoluci\u00f3n de las aves y de sus ancestros. El trabajo se hacentrado sobre el&#8230;<\/p>\n","protected":false},"author":2,"featured_media":5979,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-5978","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciencia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Modifican el ADN de pollos de corral y logran que desarrollen un rasgo propio de los dinosaurios - Buenos D&iacute;as BCS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/buenosdiasbcs.com\/?p=5978\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Modifican el ADN de pollos de corral y logran que desarrollen un rasgo propio de los dinosaurios\" \/>\n<meta property=\"og:description\" content=\"El descubrimiento arroja luz sobre la evoluci\u00f3n de las aves y de sus ancestros. 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