Draw the phylogenetic tree that shows that understanding of theevolutionary relationships of all invertebrates among the majorphyla of metazoans. What are the major clades shown on the tree?Why are the phyla grouped together in the specific clades that youhave drawn? What are the synapomorphies that define each of theclades and the different phyla within them? What sources ofevidence were used to reconstruct the phylogeny that you havedrawn? Are certain sources of evidence more reliable than others?Explain and provide examples. Do you think that there are someareasof the tree that seem uncertain and are likely to be revised byadditional study?
