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Re: Bootstrap question;

----- Original Message -----
From: "Jaime A. Headden" <qilongia@yahoo.com>
Sent: Tuesday, May 24, 2005 2:13 AM

David Peters (davidrpeters@earthlink.net) wrote:

<I mean, dino people are doing essentially the same thing by not including
parrots and hummingbirds in Cretaceous dino-bird analyses.>

True, but I assume many of the big pterosaur clades you find in that analysis haven't been found by anyone else yet. Therefore I wouldn't take those clades for granted _for this purpose_ -- because you wouldn't test their monophyly this way. (Perhaps this means more separate bootstrap analyses of smaller clades.)

When calibrating whole-mammal mtDNA trees, we tend to use human and
mouse mitochondria alone to sample eutherians.

I hope nobody really does this. Mice and men are rather closely related among placentals, and mice are famous for their extra-fast molecular evolution.