The Department is led by the Secretary of State, who is nominated by the President and confirmed by the Senate and is a member of the Cabinet. The current Secretary of State is Rex Tillerson, beginning 1 February 2017.
â¢ Genus is the first name, and the species is the second name of a scientific name of any organism. â¢ Genus ranks higher compared to species in the hierarchy of taxonomy. â¢ Two fertile animals from one species can produce a fertile progeny, whereas two animals from one genus could or could not do so.hese two are the lowest considerable taxonomic levels, but rank above subspecies or breeds or types. However, many used to confuse the two terms, genus and species. Before understanding the difference between the two, it is important to know the meanings of genus and species, and this article follows that.
The first part of a binomial is the generic name, the genus to which the species belongs. The second part is either called the specific name (a term used only in zoology) or the specific epithet (the term used in botany, which can also be used in zoology). usable definition of the word species and reliable methods of identifying particular species are essential for stating and testing biological theories and for measuring biodiversity, though other taxonomic levels such as families may be considered in broad-scale studies.