genus
A taxonomic rank grouping related species that share a common ancestor. In binomial nomenclature the genus name comes first.
Each genus sits between family and species in the taxonomic hierarchy. Members of a genus share morphological and genetic traits that distinguish them from neighboring genera.
The genus name is always capitalized and italicized in scientific writing, followed by the lowercase species epithet.
Molecular phylogenetics continues to reshape genus boundaries as new evolutionary relationships emerge.
Understanding genus-level classification helps organize the living world into coherent, navigable groups.
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