{"id":3098,"date":"2026-03-12T17:26:12","date_gmt":"2026-03-12T16:26:12","guid":{"rendered":"https:\/\/biotechlerncenter.iph-multisite.berta-bewegt.ch\/sujets\/genie-genetique\/1-gene-enthalten-den-bauplan-des-menschen-2\/"},"modified":"2026-03-13T17:14:45","modified_gmt":"2026-03-13T16:14:45","slug":"un-voyage-au-sein-de-nos-genes","status":"publish","type":"page","link":"https:\/\/biotechlerncenter.interpharma.ch\/fr\/sujets\/genie-genetique\/un-voyage-au-sein-de-nos-genes\/","title":{"rendered":"Un voyage au sein de nos g\u00e8nes"},"content":{"rendered":"\n<p>Les g\u00e8nes ne sont pas visibles \u00e0 l&rsquo;\u0153il nu et pourtant ils sont omnipr\u00e9sents. La structure de chaque \u00eatre humain est dissimul\u00e9e dans les g\u00e8nes qu&rsquo;il a re\u00e7us de ses parents. L&rsquo;ensemble des g\u00e8nes de l&rsquo;\u00eatre humain contient l&rsquo;information globale; celle-ci va d\u00e9finir la mani\u00e8re dont une minuscule cellule unique (ovule f\u00e9cond\u00e9) \u00e0 partir de laquelle tous les individus ont leur origine, va devenir un \u00eatre adulte. Les g\u00e8nes sont en grande partie responsables de ce que nous sommes: les g\u00e8nes d\u00e9terminent la couleur de nos cheveux et de nos yeux et le risque plus ou moins grand d&rsquo;\u00eatre atteint de maladies telles que le cancer. Puisque les g\u00e8nes contiennent des informations aussi importantes, ils sont bien prot\u00e9g\u00e9s des influences ext\u00e9rieures en \u00e9tant cach\u00e9s dans le noyau cellulaire.<\/p>\n\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-4-3 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Brin d&#039;ADN en point de mire - Interpharma\" width=\"500\" height=\"375\" src=\"https:\/\/www.youtube.com\/embed\/JxMF_8ImEOk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption>Brin d&rsquo;ADN en point de mire<\/figcaption><\/figure>\n\n\n\n<p>Tout individu est compos\u00e9 de divers organes, tels que le c\u0153ur ou le foie, ainsi que de tissus, par exemple les tendons ou l&rsquo;\u00e9piderme (illustration 1.1). Chaque tissu est \u00e0 nouveau constitu\u00e9 de cellules isol\u00e9es. Le corps d&rsquo;un \u00eatre humain est constitu\u00e9 de milliards de cellules. Les cellules sont les unit\u00e9s de vie les plus petites du corps, elles mesurent de 10 \u00e0 100 microm\u00e8tres (1 microm\u00e8tre = 10<sup>-6<\/sup>\u00a0m\u00e8tre, un millioni\u00e8me de m\u00e8tre), elles ne sont pas visibles \u00e0 l&rsquo;\u0153il nu. Elles sont comparables \u00e0 des l\u00e9gos: le foie est constitu\u00e9 de cellules h\u00e9patiques, les muscles de cellules musculaires et m\u00eame les os sont compos\u00e9s de cellules. Il existe plus de 200 sortes de cellules qui poss\u00e8dent des aptitudes particuli\u00e8res selon leur fonction: une cellule nerveuse peut transmettre des signaux \u00e9lectriques, un globule rouge peut par exemple transporter de l&rsquo;oxyg\u00e8ne dans les muscles.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/biotechlerncenter.interpharma.ch\/wp-content\/uploads\/2020\/02\/grafik1-1_fr.jpg\" alt=\"\" class=\"wp-image-4505\"\/><\/figure>\n\n\n\n<p>P\u00e9n\u00e9trons maintenant plus profond\u00e9ment dans notre corps: chaque cellule poss\u00e8de un noyau cellulaire dans lequel sont enferm\u00e9s les g\u00e8nes. Les g\u00e8nes ne \u00abtra\u00eenent\u00bb pas librement mais ils sont empaquet\u00e9s sous forme de chromosomes. Le noyau de la cellule humaine contient 46 chromosomes en tout. Il n&rsquo;y a que 23 chromosomes diff\u00e9rents, pr\u00e9sents sous forme de paires (voir illustration \u00e0 droite). Si l&rsquo;information g\u00e9n\u00e9tique pr\u00e9sente sur un chromosome se trouve d\u00e9truite, le chromosome jumeau peut en quelque sorte servir de copie de sauvegarde.<br><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/biotechlerncenter.interpharma.ch\/wp-content\/uploads\/2020\/01\/human_chr_green_900.jpg\" alt=\"\" class=\"wp-image-3774\"\/><figcaption>Les 23 chromosomes de l&rsquo;individu<br>\u00a9 Interpharma<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Les g\u00e8nes ne sont pas visibles \u00e0 l&rsquo;\u0153il nu et pourtant ils sont omnipr\u00e9sents. La structure de chaque \u00eatre humain est dissimul\u00e9e dans les g\u00e8nes qu&rsquo;il a re\u00e7us de ses parents. L&rsquo;ensemble des g\u00e8nes de l&rsquo;\u00eatre humain contient l&rsquo;information globale; celle-ci va d\u00e9finir la mani\u00e8re dont une minuscule cellule unique (ovule f\u00e9cond\u00e9) \u00e0 partir de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":738,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-templates\/unterthema.php","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-3098","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Un voyage au sein de nos g\u00e8nes - biotechlerncenter<\/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:\/\/biotechlerncenter.interpharma.ch\/fr\/sujets\/genie-genetique\/un-voyage-au-sein-de-nos-genes\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Un voyage au sein de nos g\u00e8nes\" \/>\n<meta property=\"og:description\" content=\"Les g\u00e8nes ne sont pas visibles \u00e0 l&rsquo;\u0153il nu et pourtant ils sont omnipr\u00e9sents. 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