Homeotic regeneration of eye in amphibian tadpoles and its enhancement by vitamin A |
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Authors: | O. P. Jangir D. V. S. Shekhawat Acharya Prakash K. K. Swami Pawan Suthar |
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Affiliation: | (1) Developmental Biology Laboratory, Department of Zoology, Dungar College, 334 001 Bikaner, India |
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Abstract: | After removal of both the lateral eyes of external gill stage tadpoles of the toadBufo melanostictus, the pineal organ gets transformed into a median eye. This type of transformation occurrs in tadpoles of both control and vitamin A treated groups. However, vitamin A increases the likelihood of homeotic regeneration (57% in the control group and 71% in the vitamin A treated group). Histological studies showed that the newly transformed median eye developed from the pineal organ. The pineal eye so developed possessed all components of a normal eye such as a retina, sensory cells and lens. |
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Keywords: | Homeotic regeneration vitamin A |
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