  Most philosophers writing on genetics and reductionism have argued that molecular genetics has not and will not reduce classical genetics (e.g., see Wimsatt  1976a, Darden and Maull 1977, Kitcher 1984, Rosenberg 1985 and 1994, Dupré 1993, and Burian 1996). Two objections to Schaffner's reductionist thesis have been most persuasive: the unconnectability objection and the gory details objection. The unconnectability objection claims that the terminology of classical genetics cannot be redefined at the molecular level in terms of DNA. This objection effectively claims that Nagel's second formal requirement, the connectability requirement, cannot be satisfied. The gory details objection alleges that molecular genetics cannot and will not explain classical genetics or better explain the phenomena that are already explained by the classical theory. This objection relates to Nagel's first formal requirement, the derivability requirement. But the gory details objection goes philosophically deeper because it implies that even if the explanatory principles of classical genetics could be derived from the explanatory principles of molecular genetics, the derivations would not be explanatory. 