A program for drawing evolutionary trees
MRC Institute of Virology, University of Glasgow Glasgow Gl 5JR, UK
From the measures of evolutionary distance between pairs of sequences in a set, it is possible to infer the genetic tree or trees which best fit these known data. DENDRON is a new program, written in FORTRAN 66, which computes an initial tree from the bottom-up, then searches among increasingly divergent trees for a better fit. As a check on the consistency of the measures, the program tests all triplets for the triangle inequality. DENDRON also calculates a single top-down tree, progressing from the trunk to the twigs, for comparison with the bottom-up trees.
Received on August 17, 1987; accepted on June 1, 1988