{"id":16145,"date":"2020-08-08T10:37:56","date_gmt":"2020-08-08T10:37:56","guid":{"rendered":"https:\/\/www.xatakaciencia.com\/genetica\/algunos-humanos-actuales-portan-adn-ancestro-arcaico-desconocido"},"modified":"2020-08-08T10:37:56","modified_gmt":"2020-08-08T10:37:56","slug":"algunos-humanos-actuales-portan-adn-de-un-ancestro-arcaico-y-desconocido","status":"publish","type":"post","link":"http:\/\/forocilac.org\/en\/algunos-humanos-actuales-portan-adn-de-un-ancestro-arcaico-y-desconocido\/","title":{"rendered":"Some modern humans carry DNA from an archaic and unknown ancestor"},"content":{"rendered":"<p>\n      <img decoding=\"async\" src=\"https:\/\/i.blogs.es\/17f4fd\/investigacion-ancestros-no-identificados-855053-205706\/1024_2000.jpg\" alt=\"Algunos humanos actuales portan ADN de un ancestro arcaico y desconocido\">\n    <\/p>\n<p>According to <a href=\"https:\/\/journals.plos.org\/plosgenetics\/article?id=10.1371\/journal.pgen.1008895\">an investigation<\/a> conducted by Melissa Hubisz and Amy Williams, from Cornell University, and Adam Siepel, from Cold Spring Harbor Laboratory, which has been published in the journal <em>PLOS Genetics<\/em>, <strong>some humans have DNA from an unidentified ancient ancestor<\/strong>.<\/p>\n<p><!-- BREAK 1 --><\/p>\n<p>The researchers developed an algorithm to analyze genomes that can identify segments of DNA that come from other species.<\/p>\n<p><!-- BREAK 2 --><!--more--><\/p>\n<h2>Algoritmo gen\u00f3mico<\/h2>\n<p>Este nuevo algoritmo resuelve el problema de identificar peque\u00f1os restos de flujo de genes que ocurrieron hace cientos de miles de a\u00f1os, cuando solo un pu\u00f1ado de genomas antiguos est\u00e1n disponibles.<\/p>\n<p><!-- BREAK 3 --><\/p>\n<div class=\"article-asset article-asset-normal article-asset-center\">\n<div class=\"desvio-container\">\n<div class=\"desvio\">\n<div class=\"desvio-figure js-desvio-figure\">\n    <a href=\"https:\/\/www.xatakaciencia.com\/paleontologia\/extincion-neandertales-pudo-deberse-a-simple-golpe-mala-suerte\" ><br \/>\n     <img decoding=\"async\" alt=\"La&#x20;extinci&#x00F3;n&#x20;de&#x20;los&#x20;neandertales&#x20;pudo&#x20;deberse&#x20;a&#x20;un&#x20;simple&#x20;golpe&#x20;de&#x20;mala&#x20;suerte\" src=\"https:\/\/i.blogs.es\/79a265\/15748701567837\/375_142.jpg\"><br \/>\n    <\/a>\n   <\/div>\n<div class=\"desvio-summary\">\n<div class=\"desvio-taxonomy js-desvio-taxonomy\">\n     <a href=\"https:\/\/www.xatakaciencia.com\/paleontologia\/extincion-neandertales-pudo-deberse-a-simple-golpe-mala-suerte\" class=\"desvio-taxonomy-anchor\">In Xataka Science<\/a>\n    <\/div>\n<p>    <a href=\"https:\/\/www.xatakaciencia.com\/paleontologia\/extincion-neandertales-pudo-deberse-a-simple-golpe-mala-suerte\" class=\"desvio-title js-desvio-title\">La extinci\u00f3n de los neandertales pudo deberse a un simple golpe de mala suerte<\/a>\n   <\/div><\/div><\/div>\n<\/div>\n<p>In the study, an algorithm was used to look at the genomes of two Neanderthals, a Denisovan, and two African humans. The researchers found evidence that <strong>el 3 % del genoma neandertal proven\u00eda de humanos antiguos<\/strong>, y estiman que el cruce se produjo entre 200.000 y 300.000 a\u00f1os atr\u00e1s.<\/p>\n<p><!-- BREAK 4 --><\/p>\n<div class=\"article-asset article-asset-normal article-asset-center\">\n<div class=\"desvio-container\">\n<div class=\"desvio\">\n<div class=\"desvio-figure js-desvio-figure\">\n    <a href=\"https:\/\/www.xatakaciencia.com\/antropologia\/enfermedades-humanas-influyeron-extincion-neandertales\" ><br \/>\n     <img decoding=\"async\" alt=\"Las&#x20;enfermedades&#x20;humanas&#x20;influyeron&#x20;en&#x20;la&#x20;extinci&#x00F3;n&#x20;de&#x20;los&#x20;neandertales\" src=\"https:\/\/i.blogs.es\/b53969\/neanderthal\/375_142.jpg\"><br \/>\n    <\/a>\n   <\/div>\n<div class=\"desvio-summary\">\n<div class=\"desvio-taxonomy js-desvio-taxonomy\">\n     <a href=\"https:\/\/www.xatakaciencia.com\/antropologia\/enfermedades-humanas-influyeron-extincion-neandertales\" class=\"desvio-taxonomy-anchor\">In Xataka Science<\/a>\n    <\/div>\n<p>    <a href=\"https:\/\/www.xatakaciencia.com\/antropologia\/enfermedades-humanas-influyeron-extincion-neandertales\" class=\"desvio-title js-desvio-title\">Las enfermedades humanas influyeron en la extinci\u00f3n de los neandertales<\/a>\n   <\/div><\/div><\/div>\n<\/div>\n<p>Adem\u00e1s, el 1 % del genoma de denisovanos probablemente proven\u00eda de un pariente desconocido y m\u00e1s distante, posiblemente <em>Homo erectus<\/em>, and <strong>approximately 15% of these &#039;super-archaic&#039; regions may have been transmitted to present-day modern humans<\/strong>. Seg\u00fan explica uno de los autores, Adam Siepel:<\/p>\n<p><!-- BREAK 5 --><\/p>\n<blockquote>\n<p>Lo que creo que es emocionante de este trabajo es que demuestra lo que se puede aprender sobre la historia humana profunda al reconstruir conjuntamente la historia evolutiva completa de una colecci\u00f3n de secuencias de humanos modernos y hom\u00ednidos arcaicos. Este nuevo algoritmo que Melissa ha desarrollado, &#8216;ARGweaver-D&#8217;, puede retroceder m\u00e1s en el tiempo que cualquier otro m\u00e9todo computacional que haya visto. Parece ser especialmente poderoso para detectar introgresi\u00f3n antigua.<\/p>\n<\/blockquote>\n<p><script>\n (function() {\n  window._JS_MODULES = window._JS_MODULES || {};\n  var headElement = document.getElementsByTagName('head')[0];\n  if (_JS_MODULES.instagram) {\n   var instagramScript = document.createElement('script');\n   instagramScript.src = 'https:\/\/platform.instagram.com\/en_US\/embeds.js';\n   instagramScript.async = true;\n   instagramScript.defer = true;\n   headElement.appendChild(instagramScript);\n  }\n })();\n<\/script><\/p>\n<p> &#8211; <br \/> The news<br \/>\n      <a href=\"https:\/\/www.xatakaciencia.com\/genetica\/algunos-humanos-actuales-portan-adn-ancestro-arcaico-desconocido?utm_source=feedburner&#038;utm_medium=feed&#038;utm_campaign=08_Aug_2020\"><br \/>\n       <em> Some modern humans carry DNA from an archaic and unknown ancestor <\/em><br \/>\n      <\/a><br \/>\n      was originally published in<br \/>\n      <a href=\"https:\/\/www.xatakaciencia.com\/?utm_source=feedburner&#038;utm_medium=feed&#038;utm_campaign=08_Aug_2020\"><br \/>\n       <strong> Xataka Science <\/strong><br \/>\n      <\/a><br \/>\n            by <a\n       href=\"https:\/\/www.xatakaciencia.com\/autor\/sergio-parra?utm_source=feedburner&#038;utm_medium=feed&#038;utm_campaign=08_Aug_2020\"><br \/>\n       Sergio Parra<br \/>\n      <\/a><br \/>\n      . <\/p>\n<p><img decoding=\"async\" src=\"http:\/\/feeds.feedburner.com\/~r\/xatakaciencia\/~4\/Y9Srth6VHHw\" height=\"1\" width=\"1\" alt=\"\"\/><\/p>","protected":false},"excerpt":{"rendered":"<p>\n      <img decoding=\"async\" src=\"https:\/\/i.blogs.es\/17f4fd\/investigacion-ancestros-no-identificados-855053-205706\/1024_2000.jpg\" alt=\"Algunos humanos actuales portan ADN de un ancestro arcaico y desconocido\"><\/p>\n<p>According to <a href=\"https:\/\/journals.plos.org\/plosgenetics\/article?id=10.1371\/journal.pgen.1008895\">an investigation<\/a> conducted by Melissa Hubisz and Amy Williams, from Cornell University, and Adam Siepel, from Cold Spring Harbor Laboratory, which has been published in the journal <em>PLOS Genetics<\/em>, <strong>some humans have DNA from an unidentified ancient ancestor<\/strong>.<\/p>\n<p><!-- BREAK 1 --><\/p>\n<p>The researchers developed an algorithm to analyze genomes that can identify segments of DNA that come from other species.<\/p>\n<p><!-- BREAK 2 --><!--more--><\/p>\n<h2>Genomic algorithm<\/h2>\n<p>This new algorithm solves the problem of identifying small remnants of gene flow that occurred hundreds of thousands of years ago, when only a handful of ancient genomes are available.<\/p>\n<p><!-- BREAK 3 --><\/p>\n<div>\n<div>\n<div>\n<div>\n    <a href=\"https:\/\/www.xatakaciencia.com\/paleontologia\/extincion-neandertales-pudo-deberse-a-simple-golpe-mala-suerte\"><br \/>\n     <img decoding=\"async\" alt=\"La extinci&oacute;n de los neandertales pudo deberse a un simple golpe de mala suerte\" src=\"https:\/\/i.blogs.es\/79a265\/15748701567837\/375_142.jpg\"><\/a>\n   <\/div>\n<div>\n<div>\n     <a href=\"https:\/\/www.xatakaciencia.com\/paleontologia\/extincion-neandertales-pudo-deberse-a-simple-golpe-mala-suerte\">In Xataka Science<\/a>\n    <\/div>\n<p>    <a href=\"https:\/\/www.xatakaciencia.com\/paleontologia\/extincion-neandertales-pudo-deberse-a-simple-golpe-mala-suerte\">The extinction of the Neanderthals could have been due to a simple stroke of bad luck<\/a>\n   <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n<p>In the study, an algorithm was used to look at the genomes of two Neanderthals, a Denisovan, and two African humans. The researchers found evidence that <strong>the 3 % of the Neanderthal genome came from ancient humans<\/strong>, and they estimate that the crossing occurred between 200,000 and 300,000 years ago.<\/p>\n<p><!-- BREAK 4 --><\/p>\n<div>\n<div>\n<div>\n<div>\n    <a href=\"https:\/\/www.xatakaciencia.com\/antropologia\/enfermedades-humanas-influyeron-extincion-neandertales\"><br \/>\n     <img decoding=\"async\" alt=\"Las enfermedades humanas influyeron en la extinci&oacute;n de los neandertales\" src=\"https:\/\/i.blogs.es\/b53969\/neanderthal\/375_142.jpg\"><\/a>\n   <\/div>\n<div>\n<div>\n     <a href=\"https:\/\/www.xatakaciencia.com\/antropologia\/enfermedades-humanas-influyeron-extincion-neandertales\">In Xataka Science<\/a>\n    <\/div>\n<p>    <a href=\"https:\/\/www.xatakaciencia.com\/antropologia\/enfermedades-humanas-influyeron-extincion-neandertales\">Human diseases influenced the extinction of Neanderthals<\/a>\n   <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n<p>Furthermore, 1 % in the Denisovan genome probably came from an unknown and more distant relative, possibly <em>Homo erectus<\/em>, and <strong>approximately 15% of these &#039;super-archaic&#039; regions may have been transmitted to present-day modern humans<\/strong>. As one of the authors, Adam Siepel, explains:<\/p>\n<p><!-- BREAK 5 --><\/p>\n<blockquote>\n<p>What I think is exciting about this work is that it demonstrates what can be learned about deep human history by jointly reconstructing the entire evolutionary history of a collection of sequences from modern humans and archaic hominids. This new algorithm Melissa has developed, &#039;ARGweaver-D&#039;, can go further back in time than any other computational method I have seen. It appears to be especially powerful in detecting ancient introgression.<\/p>\n<\/blockquote>\n<p> &#8211; <br \/> The news<br \/>\n      <a href=\"https:\/\/www.xatakaciencia.com\/genetica\/algunos-humanos-actuales-portan-adn-ancestro-arcaico-desconocido?utm_source=feedburner&amp;utm_medium=feed&amp;utm_campaign=08_Aug_2020\"><br \/>\n       <em> Some modern humans carry DNA from an archaic and unknown ancestor <\/em><br \/>\n      <\/a><br \/>\n      was originally published in<br \/>\n      <a href=\"https:\/\/www.xatakaciencia.com\/?utm_source=feedburner&amp;utm_medium=feed&amp;utm_campaign=08_Aug_2020\"><br \/>\n       <strong> Xataka Science <\/strong><br \/>\n      <\/a><br \/>\n            by <a href=\"https:\/\/www.xatakaciencia.com\/autor\/sergio-parra?utm_source=feedburner&amp;utm_medium=feed&amp;utm_campaign=08_Aug_2020\"><br \/>\n       Sergio Parra<br \/>\n      <\/a><br \/>\n      . <\/p>\n<p><img decoding=\"async\" src=\"http:\/\/feeds.feedburner.com\/~r\/xatakaciencia\/~4\/Y9Srth6VHHw\" height=\"1\" width=\"1\" alt=\"\"><\/p>","protected":false},"author":19,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[125],"tags":[],"class_list":{"0":"post-16145","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-portal-3"},"aioseo_notices":[],"_links":{"self":[{"href":"http:\/\/forocilac.org\/en\/wp-json\/wp\/v2\/posts\/16145","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/forocilac.org\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/forocilac.org\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/forocilac.org\/en\/wp-json\/wp\/v2\/users\/19"}],"replies":[{"embeddable":true,"href":"http:\/\/forocilac.org\/en\/wp-json\/wp\/v2\/comments?post=16145"}],"version-history":[{"count":4,"href":"http:\/\/forocilac.org\/en\/wp-json\/wp\/v2\/posts\/16145\/revisions"}],"predecessor-version":[{"id":16325,"href":"http:\/\/forocilac.org\/en\/wp-json\/wp\/v2\/posts\/16145\/revisions\/16325"}],"wp:attachment":[{"href":"http:\/\/forocilac.org\/en\/wp-json\/wp\/v2\/media?parent=16145"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/forocilac.org\/en\/wp-json\/wp\/v2\/categories?post=16145"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/forocilac.org\/en\/wp-json\/wp\/v2\/tags?post=16145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}