That is, a lot of what happens is enabled by the complex environment of the human womb, which provides the context for the baby's initial development.
That greatly reduces the number of genes needed compared to, say, frogs, which aren't warm-blooded and must have a large number of proteins coded for in their DNA to handle various conditions under which they might develop. If the temperature is in a certain range, they'll need one enzyme, but if it's a couple degrees warmer, they'll need a different one, and so on. With the constancy of a warm human womb to hang out in, the number of instructions needed decreases - the DNA code can make assumptions about the developmental environment, as it were.
Plus, add chaos theory, and there ya go. Or, here we are.posted by beth at 11:10 AM on February 12, 2001
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