Fig. 3

The GJA4/gja4 branch from the compressed tree shown in Fig. 1. This is an example of a group where eel (Aj) has two members, whereas all the other teleosts have one member. The eel pair is found on two different chromosomes (Table 2), suggesting that one member was lost somewhere in-between the divergence of eels and the other teleosts. Moreover, note that the herring (Ch) member is wrongly named gja6like in GenBank; the correct name would be gja4. See legend of Fig. 2 and Methods section for details about naming of the sequences