Phylogenetic Trees (VCE SSCE Biology): Flashcards
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Phylogenetics
Phylogenetics
Study of evolutionary history & relationships of organisms
Phylogenetic tree
Phylogenetic tree
Diagram showing evolutionary relationships between species
4 phylogenetic tree components (mnemonic)
4 phylogenetic tree components (mnemonic)
RBNL: Root, Branch, Node, Leaf
Root (phylogenetic tree)
Root (phylogenetic tree)
Most recent common ancestor for all members on tree
Node (phylogenetic tree)
Node (phylogenetic tree)
Splitting point between branches; speciation event
Branch (phylogenetic tree)
Branch (phylogenetic tree)
Line representing an evolutionary path
Finding closest relative on tree
Finding closest relative on tree
Trace back to first node; other species there is closest
Branch length on timescale trees
Branch length on timescale trees
Represents time
Polytomy
Polytomy
Node splitting to 3+ branches; shows uncertainty in order
Adaptive radiation
Adaptive radiation
Rapid divergent evolution producing wide array of species