{"id":105,"date":"2024-04-05T10:23:06","date_gmt":"2024-04-05T08:23:06","guid":{"rendered":"https:\/\/mruizsvt.fr\/?page_id=105"},"modified":"2025-03-05T10:00:30","modified_gmt":"2025-03-05T09:00:30","slug":"activite-9-lapparition-de-nouveaux-caracteres","status":"publish","type":"page","link":"https:\/\/mruizsvt.fr\/index.php\/3-eme\/chapitre-3-evolution-des-especes\/activite-9-lapparition-de-nouveaux-caracteres\/","title":{"rendered":"2.4 Activit\u00e9 : L&rsquo;apparition de nouveaux caract\u00e8res"},"content":{"rendered":"\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-accent-3-color\">II) Les m\u00e9canismes de l\u2019\u00e9volution<\/mark><\/p>\n\n\n\n<ol class=\"wp-block-list\" style=\"list-style-type:upper-roman\">\n<li><\/li>\n<\/ol>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-accent-4-color\">Comment de nouveaux caract\u00e8res apparaissent et comment sont ils conserv\u00e9s au cours du temps&nbsp;?<\/mark><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Exercice<\/p>\n<\/blockquote>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/mruizsvt.fr\/wp-content\/uploads\/2024\/04\/Act-9-mecanismes-de-levolution.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Contenu embarqu\u00e9 Act-9-mecanismes-de-levolution.\"><\/object><a id=\"wp-block-file--media-aed876ac-93a9-481f-9b04-d2fa1caa5bef\" href=\"https:\/\/mruizsvt.fr\/wp-content\/uploads\/2024\/04\/Act-9-mecanismes-de-levolution.pdf\">Act-9-mecanismes-de-levolution<\/a><a href=\"https:\/\/mruizsvt.fr\/wp-content\/uploads\/2024\/04\/Act-9-mecanismes-de-levolution.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-aed876ac-93a9-481f-9b04-d2fa1caa5bef\">T\u00e9l\u00e9charger<\/a><\/div>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Correction<\/p>\n<\/blockquote>\n\n\n\n<p><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Des mutations g\u00e9n\u00e9tiques c&rsquo;est-\u00e0-dire des modifications <strong>faites au hasard<\/strong> de l\u2019ADN au niveau des <strong>cellules reproductrices<\/strong> peuvent entrainer l\u2019apparition et la transmission d\u2019un nouveau caract\u00e8re. Si ce caract\u00e8re pr\u00e9sente un atout, un avantage dans l\u2019environnement des individus, ils auront tendance \u00e0 mieux se reproduire et \u00e0 perp\u00e9tuer ce caract\u00e8re.<\/li>\n\n\n\n<li>Ph\u00e9nom\u00e8ne tr\u00e8s rare qui s\u2019\u00e9tale sur des g\u00e9n\u00e9rations (plus long&nbsp;\/\u00e9chelle de vie humaine)<\/li>\n<\/ol>\n\n\n\n<p>Partie 2<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Blanche = milieu non pollu\u00e9,<br>Sombre = &nbsp;milieu pollu\u00e9.<\/li>\n\n\n\n<li>Parce que les blancs sont plus facilement rep\u00e9rables et se font manger, a la diff\u00e9rence les noires camoufl\u00e9es survivent et peuvent davantage se reproduire.<\/li>\n\n\n\n<li>Tri naturel des individus d\u2019une esp\u00e8ce selon leur capacit\u00e9 \u00e0 survivre ou \u00e0 se reproduire dans un milieu donn\u00e9.<\/li>\n<\/ol>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Bilan<\/p>\n<\/blockquote>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-accent-3-color\">L\u2019apparition de caract\u00e8res nouveaux provient de modifications du programme g\u00e9n\u00e9tique c&rsquo;est-\u00e0-dire des mutations apparues \u00ab&nbsp;<strong>au<\/strong> <strong>hasard<\/strong>&nbsp;\u00bbau cours des temps g\u00e9ologiques. Les individus ayant les caract\u00e8res les mieux adapt\u00e9s \u00e0 un environnement donn\u00e9 survivent et se multiplient&nbsp;: c\u2019est la s\u00e9lection naturelle.<\/mark><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>II) Les m\u00e9canismes de l\u2019\u00e9volution Comment de nouveaux caract\u00e8res apparaissent et comment sont ils conserv\u00e9s au cours du temps&nbsp;? Exercice Correction Partie 2 Bilan L\u2019apparition de caract\u00e8res nouveaux provient de modifications du programme g\u00e9n\u00e9tique c&rsquo;est-\u00e0-dire des mutations apparues \u00ab&nbsp;au hasard&nbsp;\u00bbau cours des temps g\u00e9ologiques. Les individus ayant les caract\u00e8res les mieux adapt\u00e9s \u00e0 un environnement [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":62,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-105","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages\/105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/comments?post=105"}],"version-history":[{"count":5,"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages\/105\/revisions"}],"predecessor-version":[{"id":128,"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages\/105\/revisions\/128"}],"up":[{"embeddable":true,"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/pages\/62"}],"wp:attachment":[{"href":"https:\/\/mruizsvt.fr\/index.php\/wp-json\/wp\/v2\/media?parent=105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}