AP Biologymediummcq1 pt
In a phylogenetic tree, a node represents
A.a common ancestor of the branches above it
B.an extinct species only
C.a modern organism
D.a geographic location
Explanation
Core Concept
Branching points mark lineage splits from shared ancestors; the closer the node, the more recent the common ancestor.
Correct Answer
Aa common ancestor of the branches above it
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