Figure 4.

Phylogeny and phylogeography of Prdm9 ZFAs. (A) Phylogenic tree constructed from 57 Prdm9 ZFAs. The identification codes of ZFA variant types are labelled according to the ZFA diagrams (Fig. 3). The 57 ZFA variant types can be divided into five major groups. The names of inbred strains carrying a given ZFA variant type are shown. (B) Points of collection of wild-captured mice are shown on a world map. Background colours indicate the ranges (territories) of each M. musculus subspecies as follows. Blue, DOM; green, MUS; purple, CAS. The red line in Europe indicates a DOM–MUS hybrid zone, where the two subspecies come into contact. Dashed lines indicate borders between other subspecies. For some species, the border regions are not clear. Japanese wild mice, M. m. molossinus, are a hybrid of two subspecies, MUS and CAS.