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<title><string language="fre"><![CDATA[1.7. DNA walk]]></string></title>
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<string language="fre"><![CDATA[We will now design a more graphical algorithm which is called "the DNA walk". We shall see what does it mean "DNA walk". Walk on to DNA. Something like that, yes. But first, just have a look again at the typical, also quite short sequence of DNA, a long text offour letters: A, C, G, T, T and so on. When the first sequence of DNA were obtained, the idea of using computers very quickly emerged but people didn't know exactly what to do with this sequence of characters. Again, there is a meaning behind the sequence because it is genetic information. It means it is the information which defines a living organism which defines how it survives, how it reproduces, how it works. So, it has a meaning. How can we discover this meaningin a text again without any markers, spaces and so on. There were some strange ideas but quite sympathetic ideas. A first idea was to say: well, can we turn these genetic sequences into music. Because, we have sequences of characters. Music is a sequence of notes, so maybe we could transform a genetic sequence into a sequenceof notes and make music. And perhaps hearing the music,we will get some ideas about what the meaning of the sequence is. Of course, if we have 4 letters,we only have 4 frequencies.]]></string></description>
<keyword><string language="fre"><![CDATA[DNA]]></string></keyword><keyword><string language="fre"><![CDATA[Genome]]></string></keyword><keyword><string language="fre"><![CDATA[algorithm]]></string></keyword><keyword><string language="fre"><![CDATA[cell]]></string></keyword><keyword><string language="fre"><![CDATA[bioinformatics]]></string></keyword>
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NOTE: Ingénieur et Docteur-Ingénieur en informatique, François Rechenmann est chercheur au centre Inria Grenoble – Rhône-Alpes. Il y exerce ses activités à l’interface de l’informatique et des sciences du vivant en contribuant plus particulièrement au développement de méthodes et de logiciels pour l’analyse des séquences génomiques des microorganismes. Cofondateur de la société Genostar, qui propose des solutions bioinformatiques aux industries pharmaceutiques, agroalimentaires et biotechnologiques, il en est le conseiller scientifique. Très impliqué dans les actions de médiation scientifique, François Rechenmann est le responsable scientifique du site Interstices dont l’objectif est d’expliquer l’informatique en tant que domaine de recherche. 
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<date><dateTime>2015-02-05</dateTime></date>
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<string language="fre"><![CDATA[Droits réservés à l'éditeur et aux auteurs. 
Ces ressources de cours sont, sauf mention contraire, diffusées sous Licence Creative Commons. L’utilisateur doit mentionner le nom de l’auteur, il peut exploiter l’œuvre sauf dans un contexte commercial et il ne peut apporter de modifications à l’œuvre originale.]]></string>
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