And the point is. . .?

• In the 1900s, Archibald Garrod proposed what we now call the ìone gene, one proteinî hypothesis:

  • A gene carries the ìinstructionsî needed to assemble one protein. (More accurately: one polypeptide chain.)
  • These ìinstructionsî direct a cell to put amino acids together in the correct order.

• These ìinstructionsî are coded in the order of DNA basesóthis is the genetic code.

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