Binomial nomenclature is a system of naming of an organism by two names is introduced by Carolus Linnaeus. In this system the name of any organism is written by its genus name and species name. While writing the scientific name of an organism, the name of the genus written first with a capital letter and the name of the species is written second with a small letter. For example, <em>Canis lupis</em> is the scientific name of wolf. Canis is the generic name and lupis is species name.
Changes in groups of organisms over time produce variations in a population. This relates to both macroevolution and microevolution. These are evolutions within a small group or a population and across the whole species.
