Variants of parsimony

1. Variants of parsimony Simply counting the number of changes may not be the most desirable way of calculating parsimony

2. Camin-Sokal parsimony change can only happen in one direction. Reversals are impossible. 1 0 1 1 0 1 0 1 0 0  1

3. Dolloparsimony change in one direction is much more probable than change in the other direction. 1 0 1 1 0 1 0 1 0 0 1

4. Polymorphismparsimony change from a polymorphic state into either monomorphic state is much more probable than change in other directions. 1 0 1 1 0 1 0 1 0 polymorphic (0&1) monomorphic (0) monomorphic (1) 1 01 0

5. Polymorphismparsimony change from a polymorphic state into either monomorphic state is much more probable than change in other directions. 1 0 1 1 0 1 0 1 0 polymorphic (0&1) monomorphic (0) monomorphic (1) 1 01 polymorphismevolves 0

6. Polymorphismparsimony change from a polymorphic state into either monomorphic state is much more probable than change in other directions. 1 0 1 1 0 1 0 1 0 morph 0 is lost polymorphic(0&1) monomorphic (0) monomorphic (1) 1 01 0

7. Polymorphismparsimony change from a polymorphic state into either monomorphic state is much more probable than change in other directions. 1 0 1 1 0 1 0 1 0 morph1 is lost polymorphic(0&1) monomorphic (0) monomorphic (1) 1 01 0

8. Budget Geen items. Multiple states changes between various states of a character are not equally likely. -1 0 1 2

9. Multiple states changes between various states of a character are not equally likely. -1 0 1 2

10. Weightingcharacters changes in some characters (or sites) may be less significant than in others. codon weight