A system of distinguishing groups for purposes of identification. A means or device for sorting into groups with similar characteristics.

A taxonomic category containing a group of similar genera. Between the taxa of order and genus.

An interpretation of scientists and Bible scholars from medieval times to the 1800's that there is no change of any kind, no variation within populations. Each kind of living thing has some ideal model to which all other living things of the same kind more or less correspond.

The science of heredity; how different characteristics are transmitted from parents to their offspring.

A taxonomic category containing a group of similar species, occurring between the taxa of family and species. The genus is the first name of the scientific name.

A group of living things with certain similar characteristics. Dogs and horses are kinds of living things.

All the individual organisms of a kind or taxon, or a group of organisms living in an area.

The smallest taxonomic category, containing only similar varieties of an organism. The second word of the scientific name. A species is designated by its scientific name, giving the genus and species.

A plan or arrangement of grouping categories for the purpose of classifying.

A scientist who classifies organisms.

The science of the classification of organisms.

Differences that occur among the offspring of a particular species.