Ajit Pai @AjitPai
Happy @DNAday! On this date in 1953, James Watson and Francis Crick proposed the “radically different structure” of a double helix for DNA—the genetic instructions for all living organisms—in a landmark paper published in @nature. 🧬 #DNADay19 https://t.co/Xq3kLNlqFW https://t.co/Prg9YEfH30 — PolitiTweet.org