All living organisms are related, from the smallest bacteria to the largest whales. To reflect the relationship between groups of species, biological classifications have been developed. Currently, Taxonomy is the discipline that deals with biological classifications, using sequences of deoxyribonucleic acid (DNA) from each organism as the most reliable source of information regarding relationship.
Species meet in genera, genera in families, families in orders, orders in classes, classes in divisions for plants and in phyla for animals. Divisions are grouped into kingdoms and kingdoms into domains.
So fly and pass and expire
the fantasies of love and glory,
those bright wings of the soul,
either white, blue or red!