Figure 1

Position of sampled localities on the map of Europe: Arzdorf (ARZ), Schweben (SCH), Straas (STR), Buskovice (BUS), Studenec (STU) and Cejkov (CEJ), with the sample size in brackets. Dashed line schematically represents the house mouse hybrid zone. (Below) The hybrid localities between Straas and Buskovice: Tyniste (TYN), Horni Slavkov (HOSL), Rudolec (RUD), Mostov (MOS), Obilna (OBIL), Milhostov (MIL), Mostov (MOS), Doubi (DOU), Luzna (LUZ), Hurka (HUR), Thierstein (THI) and Lehsen (LEH).