Are Humans And Fish From The Same Phylogenetic Tree? Yes, humans are vertebrates. Fish are also vertebrates. Are all species in a phylogenetic tree equally related? Indeed, the most basic postulate of evolutionary theory is that the same general phenomenon of descent from common ancestry applies to both the most diverse branches of the tree
Do Earthworms Have Jaws? Do earthworms have jaws? Derived Characters Earthworm 2 segmented + jaws – hair – placenta – Does kangaroo have jaws? Derived Characters kangaroo jaws + hair + placenta – multicellular + What three things do all organisms in a Cladistic tree of life have in common? Any group of organisms are
Do Sister Groups Always Form A Clade? Do sister groups always form a clade? Note that some evolutionary trees don’t include an outgroup. 2=Sister groups: Sister groups are two clades that are each others’ closest relatives. On a phylogeny, sister groups occur anytime a single ancestral lineage gives rise to two separate lineages: those two