Labels:book | bulletin board | reckoner OCR: nucleotides became adsorbed on the surface of some mineral, that mineral might have caused them to combine only in specific orientations The possibility that minerals served as useful catalysts remains real, but none of the minerals tested so far has been shown to have the specificity needed to yield only nucleotides having the correct architecture It is also possible that nonenzymatic reactions leading to the efficient synthesis of pure ribonucleotides did occur but that scientists have simply failed to identify them Asa case in point, Albert Eschenmoser of the Swiss Federal Institute of Technology recently managed to limit the number 01 different sugars generated when ribose was made from the polymerization of formaldehyde molecules In his experiments he substituted normal intermediate o ...