Evolutionary transition-transversion bias by the example of the cytb gene of palearctic Muridae (Rodentia) and Vespertilionidae (Chiroptera) - S. V. Mezhzherin; S. Y. Morozov-Leonov; O. I. Zhalay; S. V. Kokodiy; V. O. Tereshchenko; O. V. Rostovskaya; A. O. Tsyba (Reports of the National Academy of Sciences of Ukraine, 2023)