Science, Creation & EvolutionAge of the Earthtedlusk wrote: Have you ever heard of polyploidy?
yeah. and it doesn't help you out either: Biologists have discovered a whole range of mechanisms that can cause radical changes in the amount of DNA possessed by an organism. Gene duplication, polyploidy, insertions, etc., do not help explain evolution, however. They represent an increase in amount of DNA, but not an increase in the amount of functional genetic information—these mechanisms create nothing new. Macroevolution needs new genes (for making feathers on reptiles, for example), yet Scientific American completely misses this simple distinction:
Moreover, molecular biology has discovered mechanisms for genetic change that go beyond point mutations, and these expand the ways in which new traits can appear. Functional modules within genes can be spliced together in novel ways. Whole genes can be accidentally duplicated in an organism’s DNA, and the duplicates are free to mutate into genes for new, complex features. [SA 82]
In plants, but not in animals (possibly with rare exceptions), the doubling of all the chromosomes may result in an individual which can no longer interbreed with the parent type—this is called polyploidy. Although this may technically be called a new species, because of the reproductive isolation, no new information has been produced, just repetitious doubling of existing information. If a malfunction in a printing press caused a book to be printed with every page doubled, it would not be more informative than the proper book. (Brave students of evolutionary professors might like to ask whether they would get extra marks for handing in two copies of the same assignment.)
Duplication of a single chromosome is normally harmful, as in Down’s syndrome. Insertions are a very efficient way of completely destroying the functionality of existing genes. -- Jonathan Sarfati
http://www.answersingenesis.org/home/area/re2/chapter5.asp
Did you know that nearly half the human genome arose via duplications?
is that another one of your "scientific" conclusions? i thought you didn't start with your conclusions? how could such a thing that allegedly happened in the past ever be tested? you almost sound "religious" now. look out.
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