what are two descendants that split off from the same node on a phylogenetic tree called?
sister groups
why does phylogeny help with classification?
helps us to identify the evolutionary history of groups of organisms
therefore more accurate way of identifying the relationships between organisms
what are the advantages of phylogeny over classification?
phylogeny can be done without the Linnaean system but not the other way round- classification uses phylogeny to confirm classification groups are correct or determine if they need to be changed
phyl = continuous tree but class = taxonomic groups . Scientists might put organisms into a group they don't fit
classification has misleading hierarchy as it implies different groups of the same rank are equivalent, one might have more history or be more diverse. Phylogeny displays history of each group clearly
