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100 Reasons to Choose Biblical Creation Over Evolution
2. Biological Regulatory Systems
All living systems have complex regulatory systems designed to keep thousands of chemicals necessary for the organism's survival on a short leash. These regulatory systems alert the cell when a particular chemical needs to be produced and production begins in a series of complex chemical steps. When enough of the chemical is produced, further chemical cascades work together to halt production.
According to the evolution story, organisms develop slowly in step-by-step fashion over endless ages of time, with each successive development supposedly offering the organism selective advantage. Since even the simplest cell contains thousands of chemicals governed by complex regulatory systems, one might well ask which evolved first, the regulatory system or the chemical(s) to be regulated. If the chemical evolved first, then the cell would go into regulatory failure and the cell would die.
Nor could the regulatory system have evolved first since the chemicals it regulates are essential for the cell's very existence. There can be no selective advantage in evolving a complex system for regulating a non-existent chemical. Obviously both the chemical and the system to regulate it arise simultaneously, in other words, as an act of sudden creation. A
2. Biological Regulatory Systems - Notes and References
A. Behe, "Darwin's Black Box", pp. 135, 158-160. From p. 159:
"The problem for Darwinian gradualism is that cells would have no reason to develop regulatory mechanisms before the appearance of a new catalyst. But the appearance of a new, unregulated pathway, far from being a boon, would look like a genetic disease to the organism. This goes in spades for the fragile ancient cells, putatively developing step by step, that would have little room for error."