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Quote by: Abdullah Darwin said it himself that-"Natural selection can do nothing until favourable individual differences or variations occur." |
This is completely inline with evolution
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Quote by: Abdullah "First, genuine mutations are very rare in nature. Secondly, most mutations are harmful since they are random, rather than orderly changes in the structure of genes; any random change in a highly ordered system will be for the worse, not for the better. For example, if an earthquake were to shake a highly ordered structure such as a building, there would be a random change in the framework of the building, which, in all probability, would not be an improvement"-Biologist B. G. Ranganathan |
It's correct but still doesn't completely conflict with evolution.
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Quote by: Abdullah "Literally thousands of human diseases associated with genetic mutations have been catalogued in recent years, with more being described continually. A recent reference book of medical genetics listed some 4,500 different genetic diseases. Some of the inherited syndromes characterized clinically in the days before molecular genetic analysis (such as Marfan's syndrome) are now being shown to be heterogeneous; that is, associated with many different mutations... With this array of human diseases that are caused by mutations, what of positive effects? With thousands of examples of harmful mutations readily available, surely it should be possible to describe some positive mutations if macroevolution is true. These would be needed not only for evolution to greater complexity, but also to offset the downward pull of the many harmful mutations. But, when it comes to identifying positive mutations, evolutionary scientists are strangely silent"-pathologist David A. Demick
So I dont see how mutations would help |
This quote shows much misleading. A mutation by definition is change in genetic code. Now the code exists and has survived so long for a reason, because it is suited to the environment. Without a change in the environment, a change in the code can only mean a bad thing.
Beneficial mutations have occurred and has been observed, the most famous being the sickle cell anaemia. If you're a carrier then you're given increased immunity to malaria, meaning you survive better in malaria infested countries. Such is the case in northern Africa where HSc gene is far more common percentage than places without malaria. Clearly, the environmental pressure is at play.