Marcelo,
I've just purchased the MEGA program from the following address:
Institute of Molecular Evolutionary Genetics,
328 Mueller Laboratory,
The Pennsylvania State University,
University Park, PA 16802,
USA.
E-mail imeg at psuvm.psu.edu
It costs $25 and it is excellent. It has a facility for calculating synonymous/
nonsynonymous substitution rates. I haven't had cause to use this command (the
genes I work with are not protein coding), but I have found the program to be
excellent for any other calculations.
Sincerely,
James.
