Phylogeny is about the evolutionary relationships (the relatedness) of organisms. It shows us where in history organisms became different from one another, and which species they are more closely related to. Phylogeny is reflected in the taxonomy and binomial names (scientific names) of organisms.
Phylogeny can be useful in conservation as some more-related organisms may react in a similar way to certain threats. What has worked to conserve one organism may also help conserve another in a similar manner.
Binomial names are generated from the genus name and the species name. These names are typically written in italics, with a capital only at the beginning of the genus name.
Example: Tiliqua rugosa (Bobtail lizard)
There are different levels of taxonomic classification, with each becoming more specific from kingdom until species:
*In some cases these levels may also have sub-levels, such as a sub-phylum*