title: A working hypothesis on the interdependent genesis of nucleotide bases, protein amino acids, and primitive genetic code.
mesh_terms: D000225:Adenine / Q000378:metabolism; D000596:Amino Acids / Q000378:metabolism*; D005075:Biological Evolution; D055598:Chemical Phenomena; D002621:Chemistry; D003062:Codon / Q000235:genetics; D003596:Cytosine / Q000378:metabolism; D005815:Genetic Code; D006147:Guanine / Q000378:metabolism; D008954:Models, Biological; D011687:Purines / Q000378:metabolism*; D011743:Pyrimidines / Q000378:metabolism*; D014498:Uracil / Q000378:metabolism
chemical_list: D000596:Amino Acids; D003062:Codon; D011687:Purines; D011743:Pyrimidines; D014498:Uracil; D006147:Guanine; D003596:Cytosine; D000225:Adenine