What Do the Branches and Nodes in a Phylogenetic Tree

question 218

Multiple Choice

What do the branches and nodes in a phylogenetic tree show? Select the TWO answers that are correct.

• A) Taken together,branches and nodes describe Hardy-Weinberg equilibrium among modern taxa.
• B) A branch represents the common ancestor of adjacent nodes,and a node represents a modern taxon.
• C) Taken together,branches and nodes describe the ancestral relationships among modern taxa.
• D) A branch represents a single evolutionary lineage over time,and a node represents a common ancestor to all branches that follow it.
• E) A branch represents the evolutionary history of a group of organisms,and a node represents the common ancestor of an entire phylogeny.

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