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LSU BIOL 1202 (HRINCEVICH) CH. 26 Questions and Answers Rated A
NewLSU BIOL 1202 (HRINCEVICH) CH. 26 Questions and Answers Rated A 
are groups of organisms that share a unique 
common ancestor not shared by any other groups. 
The horizontal line indicating a branch on a phylogenet- 
ic tree represents ancestral forms of the named taxon, 
thereby illustrating the . 
The point at which two or more lineages diverge from their 
common ancestor is called a(n) or node. 
Each branch tip on a phylogenetic tree represents a spe- 
cific group of organisms known as a(n) ....