[Taxacom] Morphology vs Molecular

[bti at dsmz.de]

Thank you for clarifying your usage. I stand corrected if I  
interpreted your usage wrong. One point that has had be curious is  
what are the consequences of "overall similarity" - does this mean  
that one must aalways generate a mathematical similarity value or can  
one score this based on an the "overall picture". The "classical"  
pheneticists tended to generate similarity values, but I am not sure  
if this always has to be the case. Just a thought.

Brian

Quoting John Grehan <jgrehan at sciencebuff.org>:

>> bounces at mailman.nhm.ku.edu] On Behalf Of bti at dsmz.de
>> It is not just John Grehan who uses terms in a more than "derived"
>> fashion phenetic = phenotype and cladistic = molecular.
>
> Correction - I use phenetic to refer to overall similarity, whether in
> morphology or molecules and cladistics to refer to analysis of the
> distribution of derived character states shared between various taxa of
> an ingroup.
>
> Given the fact
>> that the original definition of phenetic initially centred on the
>> phenotpye but indicated that it could include genetic characters "as
>> they become available"
>
> And with that I could concur.
>
> If you consult many of the
>> taxonomic papers in prokaryote research one finds three data sets -
>> genetic, phenotypic and phylogenetic.
>
> Which would be confusing indeed.
>
> John Grehan
>
>
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