9780817637507 - The Polymerase Chain Reaction (7 Ergebnisse)

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Taschenbuch. Zustand: Neu. The Polymerase Chain Reaction | Kary B. Mullis (u. a.) | Taschenbuch | xxii | Englisch | 1994 | Birkhäuser Boston | EAN 9780817637507 | Verantwortliche Person für die EU: Springer Basel AG in Springer Science + Business Media, Heidelberger Platz 3, 14197 Berlin, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - James D. Watson When, in late March of 1953, Francis Crick and I came to write the first Nature paper describing the double helical structure of the DNA molecule, Francis had wanted to include a lengthy discussion of the genetic implications of a molecule whose struc ture we had divined from a minimum of experimental data and on theoretical argu ments based on physical principles. But I felt that this might be tempting fate, given that we had not yet seen the detailed evidence from King's College. Nevertheless, we reached a compromise and decided to include a sentence that pointed to the biological significance of the molecule's key feature-the complementary pairing of the bases. 'It has not escaped our notice,' Francis wrote, 'that the specific pairing that we have postulated immediately suggests a possible copying mechanism for the genetic material.' By May, when we were writing the second Nature paper, I was more confident that the proposed structure was at the very least substantially correct, so that this second paper contains a discussion of molecular self-duplication using templates or molds. We pointed out that, as a consequence of base pairing, a DNA molecule has two chains that are complementary to each other. Each chain could then act '. . . as a template for the formation on itself of a new companion chain, so that eventually we shall have two pairs of chains, where we only had one before' and, moreover, ' .