How would you choose between two characteristics to be used for developing a hierarchy in classification?
Gross character will form the basis of start of the hierarchy and fine character will form the basis of further steps of single the hierarchy. Example: 1.Presence of vertebral column in human beings can be taken under vertebrat. 2.Presence of four limbs makes them members of Tetrapoda. 3. Presence of mammary glands keeps them under mammalia.
