Noun
A class of objects divided into several subordinate species; a class more extensive than a species; a precisely defined and exactly divided class; one of the five predicable conceptions, or sorts of terms.
An assemblage of species, having so many fundamental points of structure in common, that in the judgment of competent scientists, they may receive a common substantive name. A genus is not necessarily the lowest definable group of species, for it may often be divided into several subgenera. In proportion as its definition is exact, it is natural genus; if its definition can not be made clear, it is more or less an artificial genus.
Source: Webster's dictionaryignore the genus communism Source: Internet
About 7 million years ago, citrus plants diverged into two groups, the main citrus genus and the ancestors of the Trifoliate orange (poncirus), which is closely enough related that it can still be hybridized with all other citrus. Source: Internet
A cherry tree will take three to four years to produce its first crop of fruit, and seven years to attain full maturity. citation Because of the cold-weather requirement, none of the Prunus genus can grow in tropical climates. Source: Internet
A Cephalogale-like species gave rise to the genus Ursavus during the early Oligocene (30–28 Mya); this genus proliferated into many species in Asia and is ancestral to all living bears. Source: Internet
According to the Sahara pump theory evidence suggests that genus Homo have migrated out of Africa at least three and possibly four times (e.g. Homo erectus, Homo heidelbergensis and two or three times for Homo sapiens). Source: Internet
About 120 species are known worldwide, with more than half the species in the genus Micropteryx in the Paleartic region. Source: Internet