State Scientific Center, GosNIIGenetika, Moscow, Russia. misha@imb.im.ac.ru|State Scientific Center, GosNIIGenetika, Moscow, Russia. misha@imb.im.ac.ru|State Scientific Center, GosNIIGenetika, Moscow, Russia. misha@imb.im.ac.ru|State Scientific Center, GosNIIGenetika, Moscow, Russia. misha@imb.im.ac.ru