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Horizontal or lateral gene transfer (HGT or LGT) is the transmission of portions of genomic DNA between organisms through a process decoupled from vertical inheritance. In the presence of HGT events, different fragments of the genome are the result of different evolutionary histories. This can therefore complicate the investigations of evolutionary relatedness of lineages and species. Also, as HGT can bring into genomes radically different genotypes from distant lineages, or even new genes bearing new functions, it is a major source of phenotypic innovation and a mechanism of niche adaptation. For example, of particular relevance to human health is the lateral transfer of antibiotic resistance and pathogenicity determinants, leading to the emergence of pathogenic lineages.

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  • Infiriendo transferencia genética horizontal (es)
  • Inferring horizontal gene transfer (en)
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  • La transferencia genética horizontal o lateral (TGH o TGL) es la transmisión de partes de ADN genómico entre organismos a través de un proceso desacoplado de la herencia vertical. Cuando ocurren eventos TGH, diferentes fragmentos del genoma son el resultado de diferentes historias evolutivas. Esto puede, entonces, complicar las investigaciones del parentesco evolutivo de linajes y especies. También, como una TGH puede llevarle a los genomas unos genotipos radicalmente diferentes de linajes distantes o incluso nuevos genes con nuevas funciones, es una fuente importante de innovación fenotípica y un mecanismo de adaptación de nichos. Por ejemplo, de relevancia particular para la salud humana es la transferencia lateral de resistencia antibiótica y determinantes de patogenicidad, llevando al (es)
  • Horizontal or lateral gene transfer (HGT or LGT) is the transmission of portions of genomic DNA between organisms through a process decoupled from vertical inheritance. In the presence of HGT events, different fragments of the genome are the result of different evolutionary histories. This can therefore complicate the investigations of evolutionary relatedness of lineages and species. Also, as HGT can bring into genomes radically different genotypes from distant lineages, or even new genes bearing new functions, it is a major source of phenotypic innovation and a mechanism of niche adaptation. For example, of particular relevance to human health is the lateral transfer of antibiotic resistance and pathogenicity determinants, leading to the emergence of pathogenic lineages. (en)
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