3.2 ǀ Phylogenetic evolution
Phylogram revealed the dissemblance of Sus scrofa and Equus cabalus OAS1 from that of ruminants during evolution. Subsequently, ruminant homologues are divided into two subclades of small (Ovis aries and Capra hircus ) and large (Bos indicus andtaurus , Bubalus bubalis Bos bison , Bos mutus ) ruminants. In small ruminants, Ovis aries and Capra hircus belong to different clusters (FIGURE 2).