Laboratory of Theoretical Molecular Genetics, Institute of Cytology & Genetics, 633090, Lavrentieva 10, Novosibirsk, Russia. fedor@bionet.nsc.ru|Laboratory of Theoretical Molecular Genetics, Institute of Cytology & Genetics, 633090, Lavrentieva 10, Novosibirsk, Russia. fedor@bionet.nsc.ru|Laboratory of Theoretical Molecular Genetics, Institute of Cytology & Genetics, 633090, Lavrentieva 10, Novosibirsk, Russia. fedor@bionet.nsc.ru|Laboratory of Theoretical Molecular Genetics, Institute of Cytology & Genetics, 633090, Lavrentieva 10, Novosibirsk, Russia. fedor@bionet.nsc.ru