Fig. 5
From: An enigmatic translocation of the vertebrate primordial eye field
Chiasmation in the craniate embryo. Conceptual representation of EF duplication by the simultaneous 3-vector process: translocation, bifurcation, and invagination, resulting in bilateral eyes with retinal inversion and a chiasm. Anterior to the top. Dorsal representation. Arrows show vectors of change with vector 2 to be interpreted as midline rather than anterior. Dotted lines show the change in migration of RPCs across the midline. Final pathways reflect known retinofugal pathways to the putative anterior nucleus (AN) of the dorsal thalamus in extant primitive species