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Scientists Rewrite the Genetic Code of E. Coli, and It's Drastically Different From Anything Found in Nature

The DNA of nearly all life on Earth is made up of 64 codons, each one a sequence of three nucleotide bases, the building blocks of DNA. These codons contain instructions for building amino acids, ...
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Scientists shrink the genetic code of E. coli to contain only 57 of its usual 64 codons

The DNA of nearly all life on Earth contains many redundancies, and scientists have long wondered whether these redundancies served a purpose or if they were just leftovers from evolutionary processes ...