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• The genus is a taxon that includes closely related species, such as the genus Canis, which includes wolves, dogs, coyotes, and jackals.
• In biological taxonomy, the genus (plural, genera) is the rank located between the family and the species.
• Biological organisms are classified according to the following levels: Kingdom, Phylum, Class, Order, Family, Genus, and Species.
• Members of the same species share the same evolutionary history and are more closely related to each other than to any other organisms, including other members of the same genus.
• In biological classification, each taxonomic level is nested within the level above it, meaning a genus contains one or more species, a family contains one or more genera, and an order contains one or more families.
• The modern biological classification system is based on the Linnaean system and consists of eight levels of taxa: domain, kingdom, phylum (or division for plants and fungi), class, order, family, genus, and species.