The major criteria are:
1. Based on Overall similarity
2. Numerous characters are used, as many as can be found,
and all are given
3. Equal weight; the resulting branching diagram (tree) is
4. Computer generated; and the branching diagram (tree) that is
produced is called a
5. Phenogram (from the Greek “phenomen,” that which is seen),
a branching diagram that links organisms by estimates of overall
similarity as evidenced by an analysis of characters.