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Phylogenetic trees from DNA including microsatellites

Frank Wright frank at sass.sari.ac.uk
Tue Jun 13 13:23:14 EST 1995


Hi Joe,
       I'm helping someone analyse rRNA ITS data from several
plant species.  It contains short stretches that look like
microsatellites (e.g. GC---- in one species, GCGC-- and GCGCGCG
in others; "-" denotes gaps).  

My feeling is to exclude thses stretches from the phylogenetic
tree analysis as they probably are microsatellites and thus
do not evolve by simple nucleotide substitution.  The trouble 
is that there is not a lot a variation left in the dataset if 
these are excluded.

Is excluding them too drastic a solution?  

Frank Wright
BioSS, University of Edinburgh
Scotland
frank at bioss.sari.ac.uk




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