what is phylogenetics
study of evolutionary relationships
what is a dendrogram
a tree-like diagram that shows hierarchical relationships b/w objects
what are biological objects? (4 examples)
DNA, protein sequences, genes, species
what is the objective of Phylogenetics (v long answer gl)
generate a dendrogram that represents evolutionary relationships among sets of biological objects by analyzing patterns of similarity and divergence under explicit models of evolutionary change.
what does OTU stand for?
Operational Taxonomic Unit
what is an OTU
- cluster of sequences based on level of seq identity
- the group being studied
extant vs extinct
extant = alive
extinct = dead
3 common presentations of a phylogenetic tree
- rectangle (most common)
- circular
- un-rooted (no MRCA)
define taxonomy
finding relationships b/w organisms
what is evolutionary divergence?
amount of change that occurs from one node to the next
