[Taxacom] Procedure request

John Grehan calabar.john at gmail.com
Mon Feb 4 11:32:59 CST 2013


>
> The relative values will be complicated by the fact that morphological
> traits are typically selected for analysis because they are thought to
> be reasonably informative, whereas molecular data tends to get
> analyzed as a complete sequence, with much less exclusion of
> homoplasous characters.  This tends to lower support values for
> molecular data.
>
I thought (perhaps erronously) that homoplasy could be recognized only
after the 'best' tree is selected and so I am at a loss to see how
restricting morphological traits to those that are unique within the
ingroup has anything to do with the amount of resulting homoplasy.

John Grehan



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