sfs
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- Jun 30, 2003
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Sometimes they do. Sometimes they create a new function. Ignoring that reality won't make it go away.mutations destroy a previously specified function.
Yeah, that's wrong, too. Random mutations can be observed to generate new functions at quite a respectable rate, we can observe closely related genes with different functions and reconstruct their origin in a gene duplication event as well as the mutations that led to a new function, and we can also identify the mutations that caused nonfunctional sequence to become functional in some species.I suppose you could measure it by the length of the sequence required for a specific protein for example. A modest one may be hundreds of nucleotides long with a precise arrangement required to meet its function, or any function for that matter. And we can quantify the mathematic probability of such a thing ever being created by random mutation, it ain't good.
All of which is to say that we have very good evidence that random mutations can create new genes, can generate new molecular functions for existing or duplicated genes, and can generate new, markedly diverged phenotypes. So what exactly is it that you think mutations can't do?
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