Polymerization of amino acids under primitive earth conditions Jose J. FloresCyril Ponnamperuma OriginalPaper Pages: 1 - 9
Sequence data: Magnitude and implications of some ambiguities Richard HolmquistThomas H. Jukes OriginalPaper Pages: 10 - 16
Is there a physical chemical basis for the present genetic code? M. RaszkaM. Mandel OriginalPaper Pages: 38 - 43
Base composition of ribosomal RNA and evolution Pedro A. Lava-SanchezFrancesco AmaldiAlessandro La Posta OriginalPaper Pages: 44 - 55
Probable evolutionary mechanism underlying octanol dehydrogenase isozyme patterns in the genus drosophila Sarah Bedichek PipkinGilbert O. OgonjiOlajide O. Agbede OriginalPaper Pages: 56 - 71
Comparison of frog albumins with those of other vertebrates Donald G. WallaceAllan C. Wilson OriginalPaper Pages: 72 - 86
On the stochastic model for estimation of mutational distance between homologous proteins Motoo KimuraTomoko Ohta Letter to the Editor Pages: 87 - 90