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Ultima actualizare:
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Adaugă-ne ca sursă preferată în Google
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Urmărește-ne pe Discover
Cu aproximativ 600 de milioane de ani în urmă, un accident genetic aleatoriu a făcut posibilă viaţa şi evoluţia organismelor pluricelulare, inclusiv a omului.
O singură modificare a fost necesară pentru a face saltul de la formele de viață unicelulare, precum bacteria, la cele pluricelulare. ADN-ul codifică proteinele, moleculele care efectuează toate activităţile vitale în celulele vii. Mutaţiile sunt schimbări aleatorii care apar în ADN în momentul diviziunii celulare. Majoritatea mutaţiilor sunt fatale pentru organism, dar uneori acestea pot introduce produce schimbări uimitoare în mecanismul celular.
