Instructions: Consider the following information and complete the three possible phylogenetic trees. Then decide which of the trees is the most likely based on parsimony. Check the box next to the tree that is that is most parsimonious Tree #1 Tree #2 Tree #3 Spots Jaw visible Body color Head color Ancestor Tree #1 Jaw visible Antenna Body color Body shaper Body shape Body color Head color Antenna Jaw visible Spots B C ancestor round orange yellow white black yes no yes Ancestor Tree #2 species round A yes yes no species B species C round oval orange black yes no yes yellow white Tree #3 no yes yes Ancestor B

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Evolutionary lineages

An evolutionary lineage is a series of populations of organisms that descend from a common ancestor. Each species in the lineage is the direct consequence of evolutionary change from a common ancestor. A phylogenetic tree is generally used to display lineages visually. Lineages are components of the phylogenetic tree of life. Molecular systematics procedures are widely used to predict lineages.