phylogeny (n.)

"the branch of biology which attempts to deduce the genesis and evolution of a phylum," 1869, from German Phylogenie, coined 1866 by German biologist Ernst Heinrich Haeckel from Greek phylon "race" (from PIE root *bheue- "to be, exist, grow") + -geneia "origin" (from PIE root *gene- "give birth, beget"). Related: Phylogenic.