Scientists May Have Found Traces of an Extinct Genetic Code That Came Before DNA
Scientists have long believed they understood how life’s genetic code evolved, but new research upends that assumption. By ...
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New Look at the Last Universal Common Ancestor
University of Arizona The researchers employed a new approach to evaluate amino sequences across the tree of life, all the way back to the last universal common ancestor, or LUCA, a hypothetical ...
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Scientists Say We May Have Been Wrong About the Origin of Life
In a new peer reviewed analysis, scientists quantify amino acids before and after our “last universal common ancestor.” The last universal common ancestor is the single life form that branched ...
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Nucleic Acids to Amino Acids: DNA Specifies Protein
Hidden within the genetic code lies the "triplet code," a series of three nucleotides that determine a single amino acid. How did scientists discover and unlock this amino acid code? Once the ...