Origin and evolution of the genetic code: the universal enigma
www.ncbi.nlm.nih.gov › pmc › articlesWhen considering the evolution of the genetic code, we proceed under several basic assumptions that are worth spelling out. It is assumed that there are only 4 nucleotides and 20 encoded amino acids (with the notable exception of selenocysteine and pyrrolysine, for which subsets of organisms have evolved special coding schemes (), see also discussion below) and that each codon is a triplet of ...
Journal of Computational Physics
https://isim.asu.edu/MerrillPeet_JCP_2019.pdfB.E. Merrill, Y.T. Peet / Journal of Computational Physics 390 (2019) 121–151 The immersed boundary method, which was originally introduced by Peskin in 1972 to model the blood flow through a pumping heart[1,2], allows for flow solutions to be computed around irregular shaped objects by tracking Lagrangian points