Q. Define Phylogenetic system of classification

  phylogenetic(cladistic)system classification:                                                                             1.It is an evolutionary classification based on how a common ancestry was shared.           2.cladistic classification summarizes the ‘genetic distance’between all species in the       ‘phylogenetic tree’                                                                                                                           3.In cladistic classification characteres such as analogous and homologous characters are taken into consideration.                                                                                                                 4.ex.for analogous characters:-wings in sparrows and patagia in flying squirrels.                            ex.for homologous characters:-wings of sparrows and finches.                                                 5.ernst haeckel introduced the method of representing phylogeny by ‘trees’or ‘branching diagrams’.