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- Sep 20, 2018
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Obviously I don't know much about it, but it seems to me the cases of the Senegal bichir and the caterpillar are rather different, in that the caterpillar is at a normal stage of the butterfly or moth's life cycle, while a Senegal bichir's anatomy changes in response to a specific environmental change -- if you don't take them out the water, then those changes don't take place, and they stay as they are for the whole of their lives.There is so much wrong with his. We actually have a pretty good evolutionary history of the eye, and it's not mysterious. Lots of the examples here are SUPER stretching things. Like the Senegal bichir is not “adapting to land in a single generation”, any more than a caterpillar is adapting to the air.
Presumably if the Senegal bichirs' environment changes radically and the water in which they live is no longer there, within a few generations we'll see populations of land-dwelling bichers with legs.


















