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A weird twist in DNA might explain why it's such a great blueprint for life

from The Washington Post

Billions of years ago, when the Earth was in its infancy and biology hadn't even gotten going, the precursors to the first living organisms were probably self-replicating strands of RNA. Scientists believe that this "RNA world" provided the foundation for life as we know it. But the most essential part of that world — RNA — has been shunted to the sidelines. Instead, DNA got the high-profile gig of encoding our genetic information. So how did it win out? more


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