by Eotyrant » Thu 09 Feb 2006, 14:50:33
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$this->bbcode_second_pass_quote('', 'T')he development of gills in fish and the inner ear in human are controlled by entirely different sets of genes. While similar in appearance (at a particular point in embryonic development, though not the same point relative to gestational periods in the individual organisms), biochemically these structures are not related and are formed by radically different biochemical mechanisms. This is not and cannot be evidence of evolution.
"The pharyngeal pouches that appear in embryos technically are not gill slits, but that is irrelevant. The reason they are evidence for evolution is that the same structure, whatever you call it, appears in all vertebrate embryos. Agassiz (not a Darwinist himself) said, "The higher Vertebrates, including man himself, breathe through gill-like organs in the early part of their life. These gills disappear and give place to lungs only in a later phase of their existence" (Agassiz 1874).
Darwinian evolution predicts, among other things, similar (not identical) structures in related organisms. That pharyngeal pouches in humans are similar to pharyngeal pouches (or whatever you call them) in fish is one piece of evidence that humans and fish share a common ancestor. "
To quote Talkorigins.org, link given a few posts back.
$this->bbcode_second_pass_quote('', 'T')hough I have not previously discussed how I came to my current position on evolutionary theory, now would be a good time to discuss it. Formerly I had the opinion, as one who believes in a Creator God, that evolution was the scientifc process that God used to populate our planet (and others in the universe, though as yet undiscovered). I believed completely that random mixtures of elements (hydrogen, carbon, nitrogen, oxygen, etc.) under certain circumstances could generate amino acids, and incredibly nucleic acids, DNA, and the like. But as I gained more knowledge about chemistry and biochemistry, I realized that this was simply impossible, based on statistics and in practical ways as well. I'm not sure what I think now, about the actual origin of DNA (or RNA) which is fundamental to life, as far as we can tell today. I began to question the entire theory of evolution after that, because without that first strand of DNA, we cannot have any evolution.
Abiogenesis and evolution are seperate theories.
$this->bbcode_second_pass_quote('', 'I') think the reconstruction techniques used on these skulls are suspect. There is too much room for personal interpretation in how small fossilized bone fragments are assembled for the process to be dependable. I believe the there are species of apes represented in these skulls and there are human skulls represented. I don't think there is a clear case for transitional forms. I believe that skulls identified as Homo sapeins, Homo erectus, Homo neaderthalensis, Homo heidelbergenis, and some Homo ergaster are within the range of racial diversity that exists in modern humans. Take a look at some native peoples in Africa and southeast Asia and the Pacific.