What is "phylogeny"

Phylogenesis \Phy`lo*gen"e*sis\, Phylogeny \Phy*log"e*ny\, n. [Gr. ? tribe + E. genesis, or root of Gr. gi`gnesqai to be born.] The history of genealogical development; the race history of an animal or vegetable type; the historic exolution of the phylon or tribe, in distinction from ontogeny, or the development of the individual organism, and from biogenesis, or life development generally.

"genesis and evolution of a phylum," 1869, from German Phylogenie, coined 1866 by German biologist Ernst Heinrich Haeckel (1834-1919) from Greek phylon "race" (see phylo-) + -geneia "origin," from -genes "born" (see genus). Related: Phylogenic.

n. 1 (context systematics English) The evolutionary history of groups of organisms, such as species or clades. 2 (context systematics informal English) A phylogenetic diagram. 3 The historical development of a human social or racial group. 4 The historical development of any thing, idea, etc.

n. (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms [syn: evolution, phylogenesis]

The term phylogeny derives from the Greek terms phyle and phylon , denoting “tribe” and “race”; and the term genetikos , denoting “relative to birth”, from genesis “origin” and “birth”. Phylogenetics is the study of evolutionary relatedness among groups of organisms (e.g. species, populations), In biology this is discovered through molecular sequencing data and morphological data matrices ( Phylogenetics), while in Psychoanalysis this is discovered by analysis of the memories of a patient and the relatives.