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It is essential for genetic material to be able to make exact copies of itself; otherwise growth would produce disorder, life could not originate, and favourable forms would not be perpetuated by natural selection.

遗传物质能够精确地复制自己是至关重要的;否则，生长就会产生混乱，生命就不能起源，有利的形式就不会通过自然选择得以延续。

— Maurice Wilkins 威尔金斯