| More docs on the ARB website. See also index of helppages. Last update on 22. May 2026 .

Main topics: ARB: a Short Introduction Glossary Starting ARB Parsimony Add Selected Species | Related topics:
# Add Marked Species OCCURRENCE DESCRIPTION NOTES EXAMPLES WARNINGS BUGS ## OCCURRENCE
### ARB_NT/Tree/Parsimony/Tree/Add Marked Species
## DESCRIPTION
### All 'marked species' (see ´Glossary´) are positioned according to maximum parsimony criteria. The current tree topology is not changed.
## NOTES
### The current parsimony value (number of base changes needed) is displayed after the 'Current Par' prompt in the upper part of the 'ARB_PARSIMONY' window and the 'Message' window (pops up while calculating). ### This tool should be used for the positioning of 'species' for which only partial or preliminary sequence data are available.
## EXAMPLES
### None
## WARNINGS
### The phylogenetic information conferred by the new sequence(s) is not used for global tree optimization.
## BUGS
### No bugs known