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RE: origins of endothermy
< Hi! Have there been any attempts to explain how endothermy could
< have evolved
< from ectothermy at the biochemical level? (Since that's where it would < have
< had to start, right?) Thanks in advance.
Check out a message I wrote this January (Saturday the 23rd) in the
Dinosaur List Archives: "Re:'The X Digit': A Pteroid Bone?". At the end, I
make brief mention of the cellular difference between endothermy and
ectothermy, and provide some references. The difference seems to be due to
increased "leakiness" in the cell membranes, which in turn causes the ionic
pumps in the cell membranes to work harder to maintain an ionic gradient, and
produces more heat as a by-product.