Complex sentence: Therefore, the role of canonical Wnt signaling pathway in axis specification has a deep evolutionary origin and the cnidarian oral-aboral axis is homologous to the bilaterian anteroposterior axis with the oral side corresponding to the posterior side.
Split into simpler sentences: Therefore, the role of canonical Wnt signaling pathway in axis specification has a deep evolutionary origin. The cnidarian oral-aboral axis can be homologized to the bilaterian anteroposterior axis with the oral side corresponding to the posterior side.