Long branch attraction

[Phillip Bigelow <bigelowp@juno.com>]

I would appreciate a simple explanation for the concept of "long branch
attraction".  On-line glossaries use molecular phylogeny to describe it,
but that approach makes no sense to me.  Perhaps an explanation based on
morphologic characters would sink in better.

TIA,

<pb>
--
"If you are traveling into the future in a time machine, and you pass a
person from the future who is traveling into the past, it's probably a
good idea to avoid eye contact." - Jack Handey