Department of Genetics, University of Kaiserslautern, Postfach 3049, 67653 Kaiserslautern, Germany.|Department of Genetics, University of Kaiserslautern, Postfach 3049, 67653 Kaiserslautern, Germany.|Department of Genetics, University of Kaiserslautern, Postfach 3049, 67653 Kaiserslautern, Germany.|Department of Genetics, University of Kaiserslautern, Postfach 3049, 67653 Kaiserslautern, Germany.|Department of Genetics, University of Kaiserslautern, Postfach 3049, 67653 Kaiserslautern, Germany.|Department of Genetics, University of Kaiserslautern, Postfach 3049, 67653 Kaiserslautern, Germany.|Department of Genetics, University of Kaiserslautern, Postfach 3049, 67653 Kaiserslautern, Germany.|Department of Genetics, University of Kaiserslautern, Postfach 3049, 67653 Kaiserslautern, Germany.|Department of Genetics, University of Kaiserslautern, Postfach 3049, 67653 Kaiserslautern, Germany.