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Fig. 2 | BMC Evolutionary Biology

Fig. 2

From: Genomic sequence analyses of classical and non-classical lamprey progesterone receptor genes and the inference of homologous gene evolution in metazoans

Fig. 2

A phylogenetic tree demonstrating the evolutionary relationship between nPR, ER and ERR in metazoans. ERR of placozoan (Trichoplax adhaerens) was chosen as the out group. The tree was constructed using the neighbor joining (NJ) method with 100 bootstraps. The blue and pink branches represent the ERR and ER genes appeared in both invertebrates and vertebrates. The red branch represents the nPR genes appeared in the vertebrate lineage and lancelet. The genes identified in lampreys are highlighted with orange dots

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BMC Ecology and Evolution

ISSN: 2730-7182

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