{"id":150,"date":"2022-06-23T15:18:57","date_gmt":"2022-06-23T15:18:57","guid":{"rendered":"https:\/\/futura.study\/blog\/?p=150"},"modified":"2022-06-23T15:18:57","modified_gmt":"2022-06-23T15:18:57","slug":"la-mitosi","status":"publish","type":"post","link":"https:\/\/futura.study\/blog\/materie\/biologia\/la-mitosi\/","title":{"rendered":"LA MITOSI"},"content":{"rendered":"<p><b>LA MITOSI<\/b><\/p>\n<p><span style=\"font-weight: 400;\">La mitosi \u00e8 un processo di riproduzione asessuata che permette la produzione di 2 cellule figlie identiche alla cellula madre.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Si riproducono cos\u00ec i batteri e le cellule somatiche del nostro organismo (ossia le cellule non sessuali).\u00a0 La mitosi \u00e8 divisa in 4 fasi: profase, metafase, anafase, telofase.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><i><span style=\"font-weight: 400;\">Profase<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400;\">Durante questa fase l\u2019eterocromatina e l\u2019eucromatina si spiralizzano e formano i cromosomi, che si spostano verso la periferia del nucleo. Nel frattempo avviene la formazione del fuso mitotico; i centrioli migrano verso poli opposti della cellula dove generano diversi tipi di fibre che serviranno a dare stabilit\u00e0 ai centrioli e a legare il centromero dei cromosomi nella prossima fase (in particolare queste ultime fibre sono dette fibre del cinetocore). Verso la fine della profase, la membrana nucleare e i nucleoli scompaiono.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><i><span style=\"font-weight: 400;\">Metafase<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400;\">Essa inizia quando i cromosomi si dispongono sul piano equatoriale della cellula e termina quando le fibre del cinetocore raggiungono i centromeri dei cromosomi e si ancorano ad essi.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><i><span style=\"font-weight: 400;\">Anafase<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400;\">L\u2019anafase ha inizio quando i cromatidi fratelli che compongono ogni cromosoma si separano, dirigendosi verso i poli opposti della cellula. Il movimento dei cromosomi \u00e8 possibile grazie all\u2019accorciarsi delle fibre del cinetocore che permettono lo spostamento dei cromatidi verso gli estremi della cellula.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Telofase<\/span><\/p>\n<p><span style=\"font-weight: 400;\">E\u2019 caratterizzata dalla ricostruzione del nuclei, uno per ogni estremit\u00e0, e la despiralizzazione dei cromosomi. La telofase si conclude con la citodieresi, ovvero quella fase dove la cellula si divide formando due cellule figlie identiche alla cellula madre ma pi\u00f9 piccole. <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>LA MITOSI La mitosi \u00e8 un processo di riproduzione asessuata che permette la produzione di 2 cellule figlie identiche alla cellula madre.\u00a0 Si riproducono cos\u00ec i batteri e le cellule&#8230;<\/p>\n","protected":false},"author":1,"featured_media":151,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","footnotes":""},"categories":[2],"tags":[15,23],"class_list":["post-150","post","type-post","status-publish","format-standard","has-post-thumbnail","category-biologia","tag-biologia","tag-mitosi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>LA MITOSI - Futura Blog<\/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:\/\/futura.study\/blog\/materie\/biologia\/la-mitosi\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LA MITOSI - 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