LINGERING SHADOWS. “Remains of the notochord are retained as the gel-like nucleus pulposus at the center of intervertebral discs. It is difficult if not impossible to discern these transformations as remnants of solely evolutionary or developmental alteration—plainly, these changes are intertwined—but it is abundantly clear that the structures that remain are mere shadows of their former ontogenetic and phylogenetic states, and thus guides to organismal history.”
https://evolution-outreach.springeropen.com/articles/10.1186/s12052-014-0012-5
linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022