Page 200 - The Cambrian Evidence that Darwin Failed to Comprehend
P. 200

The Cambrian Evidence That Darwin Failed to Comprehend

                        Control genes like homeotic genes may be the target of mutations that
                        would conceivably change phenotypes*, but one must remember that,
                        the more central one makes changes in a complex system, the more se-
                        vere the peripheral consequences become. . . . Homeotic changes in-
                        duced in Drosophila [fruitfly] genes have led only to monstrosities, and
                        most experimenters do not expect to see a bee arise from their
                        Drosophila constructs. 146
                        As you have seen, the development of any living thing is an ex-
                   ceedingly complex process. The Hox genes that regulate such proc-
                   esses definitively refute scenarios based on random change. Even
                   so, some evolutionists still ignore this scientifically demonstrated
                   fact and continue to defend evolutionary scenarios concerning Hox
                   genes.
                        James Valentine of University of California at Berkeley, David
                   Jablonski from University of Chicago and Douglas Erwin of the
                   National Museum of Natural History in Washington D.C. relate Hox
                   genes to the sudden emergence of Cambrian life forms, suggesting
                   that many phyla that arose in that period differentiated from anoth-
                   er as a result of mutations taking place in these Hox genes. In order
                   to protect their scenario from the known harmful effects of Hox mu-
                   tations, they resort to the entirely artificial claim, based on no scien-
                   tific observation, that the Hox genes at that time were highly flexi-
                   ble and permitted change.
                        Simon Conway-Morris of Cambridge University says that this
                   hypothetical “flexibility” rests on no scientific grounds:

                        Just as spoken language (also modular) is flexible enough to support
                        the whole of human culture, says Valentine, this genetic language is so
                        basic, so powerful, and so adaptable that it could underlie the whole
                        amazing diversity of animal life.


                   * Phenotype is the set of observable characteristics of an organism.




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