Arete Posted December 16, 2014 Share Posted December 16, 2014 (edited) Again you're adding no value to this discussion you're simply scrutinizing other's comments. Pot, meet kettle. Plus, it's a discussion forum. I am discussing. It tends to be what we do here. Ofcourse if you feel the need to protect your ego, by all means go right ahead. You just quoted someone else, and attributed it to me. You also, as CharonY points out, got the biological definition of fitness wrong. Survival is not biological fitness. Fitness involves the contribution of genetic material to the next generation. You also might want to drop the snarky little personal attacks, as if you want an example of something that doesn't add anything to a discussion they are it. Yes we are well aware that drift can cause fluctuations in allele frequency as well as desertion of certain alleles. Yes, thank you for the Bio 101, and again as with most of your comments, no value in this conversation what so ever. You missed the point. You claim that "ALL biological systems are pushing to greater fitness". Various biological process - drift, inbreeding, hitchhiking, recombination, etc are all capable of moving a population lower on a fitness landscape, hence to a state of less fitness. Making your previous comment about fitness demonstrably incorrect. Might want to take Bio101 again... Though this does not describe general directionality of organic evolution in at it's broadness, as if this happened to be the case biology would have never sprouted. Genetic drift is generally a poor argument to the fact that better fitness is the general driving force of biological systems. While selection is undoubtedly a major force in evolution, so is drift. As previously cited, drift can overwhelm selection. To claim otherwise is to contradict decades of empirical population genetic data. You can't generalize about the role of selection in evolution, as it is not a continuous force. As previously cited (again), a reduction in selection pressure is often associated with adaptive radiation. Hence drift and selection operate synergistically to create phenotypic diversity. To claim one force over the other is simplistic to the point of being incorrect. This being said evolution will not cease, again this goes back to my previous comment.. These laws that dictate biological systems are in turn dictated by physical laws, and so it is the failure of the biologist such as yourself to think otherwise. Could you point out where I, or anyone else claimed any of this, please? It seems like an example of the pointless soapboxing you so vehemently despise. Edited December 16, 2014 by Arete Link to comment Share on other sites More sharing options...
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