«40 Phylogeny; from the Greek: still "do half phylon midsole: " tribe, race "? and among ³µ½µ±: " birth, origin, provenance " ) It is the determination of the evolutionary history of organisms. But the term also appears in historical linguistics to refer to the classification of human languages according to their common origin, in general the term is used in its biological sense.The need to discover the evolutionary history of organisms began with the publication of the origin of species by Darwin in 1859. The incorporation of evolutionary theories in the systems of classification of organisms is a process that today not yet finished ( Queiroz and Gauthier 1992 [1] ). A critical step in this process was the acquisition of explicit methods to hypothesize phylogenetic relationships, put them to the test and see them reflected in the classifications, methods for which biologists as Willi Hennig ( German entomologist, 1913-1976 41, Walter Zimmermann ( German botanist, 1892-1980 ) Warren H. Wagner, Jr. ( American botanist, 1920-2000 ) and many others have made valuable contributions.Systematic biology is the science dealing with determine the phylogeny of organisms to be used as the basis for classification systems. It ceases to be weak, but you did in entrrar to yahoo answers, seeking in googleeee if you do the task... or on the wiki yourself, for diosssss