Science, Creation & EvolutionInformationAny mutation that is not fatal COULD proof to be useful under the right circumstances. And fatal mutations remove themselves from the genepool automatically, by killing the animal before it has reproduced. Environments change. Having a whole load of earlier variations in your genetic makeup offers a larger amount of possibilities. The south american hoatzin is a bird that benefits from the genetic material that grows vingers on its wings. The genes from the dinosaurian ancestors are still used, or reappeared in its physiology. These claws are essential to the young, because they need to hold on to branches until they can fly. In most birds this genetic material is useless bagage, and would probably be a neutral mutation. In the hoatzin it was favoured by natural selection. You write about 'negative inheritable mutations', but are they really proving to be negative? I would say its an advantage to have a lot of normally useless ancesteral genes. |
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