naisho
Forum Disorders M.D.,Ph.D
- Joined
- Nov 6, 2006
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I think I know where he is going with this. If you think about the survival of the fittest (Darwin theory of evolution) then the genetics that have the highest survival rates are the ones that produce the most offsprings and thus are the dominate ones in that group. The idea is deafness is a defect that would through natural selection "die off".
However there are several problems with using the theory of evolution for conditions like deafness, blindness and other "disorders". The assumption is that genetics is the sole cause of these disorders. This is not true. To an extent, genetics pay a part in deciding who is more susceptible and how likely it is that your body may develop a disorder of some kind. However genetics is only the blueprint on which a body is built. There are so many stages of construction where something can go awry (or not according to the plan). And then there are the environmental issues that create conditions that are perhaps not ideal for a fetus to develop. After all that, you still have illnesses, accidents, and even intentional injury.
That was my 2 1/2 cent contribution!
I see where he's going about it too.
He has a general albiet basic understanding/point in mind and with Darwin's Natural selection theory, it fits the picture in conditions pertaining to occurrences in nature. Species with less desirable conditions do not and might not survive as adequately as those most suited for their ecology. Ex, everyone with a decent head on their shoulders would rationalize a deaf antelope is more likely to get caught than a hearing antelope on the African savannah. If there were any deaf group of antelope, they would have been easy prey for any hyenas, lions, cheetahs (no pun intended ) roaming the area and have became since then long extinct (hence naturally selected).
However he's not taking into account for the human population, we currently don't follow the theory of natural selection -- at least not precisely. We have conditions such as herd immunity, and are totally unbalanced in the Hardy-Weinberg equation.
I don't think it's as easy to label human species as capable of "evolving" these days. The pool is too diverse with no attempts to maintain homology unless we talk about groups like KKK, Nazi, etc.