Four phylogenetic trees inferred with the same set of 68 16S rRNA sequences
Tree A: full-length sequences were employed.
Tree B: sequences were reduced to positions 394-1542 of Escherichia coli.
Note major differences between the two trees.
Ten sequences were removed from Tree A,
then re-added using the ARB quick-add function with either full-length sequences (Tree C)
or with sequences reduced to positions 394-1542 of Escherichia coli (Tree D).
The correct overall topology is restored in both.