. The elements of experimental embryology. Embryology, Experimental; Embryology. Fig. 174 Diagram to illustrate serial heteromorphosis. In Palaemon (above) removal of the eye without removal of its ganglion {a, distal cut) leads to regeneration of an eye {h); with removal of the ganglion {a, proximal cut), to that of an antenna-like organ (c). In Mantids (below) amputation of the antenna in the region of the flagellum {d,I) leads to regeneration of a fresh flagellum {e); in a basal joint (d,III), to that of a leg (/). (From Przibram, Handb. nor?n. u. path. Physiol, xiv (i), (i).) kept at 25° C
. The elements of experimental embryology. Embryology, Experimental; Embryology. Fig. 174 Diagram to illustrate serial heteromorphosis. In Palaemon (above) removal of the eye without removal of its ganglion {a, distal cut) leads to regeneration of an eye {h); with removal of the ganglion {a, proximal cut), to that of an antenna-like organ (c). In Mantids (below) amputation of the antenna in the region of the flagellum {d,I) leads to regeneration of a fresh flagellum {e); in a basal joint (d,III), to that of a leg (/). (From Przibram, Handb. nor?n. u. path. Physiol, xiv (i), (i).) kept at 25° C, but at lower temperatures a leg-like organ is formed. These heteromorphoses are thus presumably produced when the main gradient of the animal is flattened. The flattening would be primarily due to age, but can be accentuated by external con- ditions. The function of these heteromorphoses is of great interest. (Lissmann and Wolsky, 1933.) Another main gradient of the early vertebrate embryo is the asymmetry-gradient (Chap, iv, p. 77), which is responsible for the asymmetrical disposal of the heart and viscera. Further evidence. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Huxley, Julian, 1887-1975; De Beer, Gavin, Sir, 1899-1972. New York [Hafner Pub. Co. ]
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Keywords: ., bookcentury1900, bookcollectionbiodiversi, booksubjectembryology
