Any inheritable 'adaptation" is evolution by definition
by
JGC
07/22/2008, 9:57 PM #
“”Every observable adaptation is simply a logical alteration”
>>Any ‘adaptation’ that’s the result of a change in genetic composition, that s inheritable, is evolutionary change by definition.
“An alteration triggered by environment”
>>Individuals do adapt in response to environmental stressors—for example, multiple physiologic changes occur which improve aerobic capacity when athletes train at higher altitudes.
But evolutionary change isn’t triggered by environment, but rather changes that occur randomly at a low but non-zero frequency within a population are selected for or against with respect to environment. (e.g., adding antibiotics to a bacterial culture’s medium doesn’t cause genetic changes conferring resistance—subpopulations of bacteria within the larger population that already possess alleles conferring resistance contribute to the next generation’s gene pool to a greater extent than those that do not possess alleles conferring resistance.)
“Organisms perform time-triggered alterations analogous to the slight and petty demands of their changing environment”
>>What are you talking about here? This doesn’t model seem to either adaptive or evolutionary change.
“No historically observed nor any modern alterations of living organisms have ever merited the classification of "New"”
>>Nonsense: we’ve directly observed new species arise from existing ones as the result of evolutionary change, we’ve directly observed new biological activities arise in existing populations as the result of evolutionary change (for example, flavobacterium K172 gained the ability to digest nylon oligomers as the result of an insertion mutation—a additional Thymidine at position 99 of the Nyl B allele.)
“As in "New Organism"
>>A new species by definition is a new organism, and we’ve observed multiple speciation events, in plants, insects, vertebrates, etc.
“Environmental changes (even in history's span of x# years) still fail to offer proof of a start towards radical "New Organisms"
>>The direct observation of a new species arising by descent from an existing species is just such a start.
“Everything adapts [slightly] in order to defend (preserve) itself”
>>This isn’t accurate—you’re suggesting evolutionary change is goal-oriented—that it occurs for the purpose of ‘defending itself’. This isn’t the case.