{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture 023 - Seeing The Forest For The Trees Phylogenies

Lecture 023 - Seeing The Forest For The Trees Phylogenies -...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Bio1222 Seeing the forest for the trees: phylogenies Seeing the forest for the trees: phylogenies Taxonomic hierarchy Reading trees Building trees what traits? – homoplasy vs homology – parsimony Using trees Bio1222 Classifying organisms: taxonomic hierarchy Classifying organisms: taxonomic hierarchy Linnaean system: taxa are nested in a hierarchy We are: – Domain Eukarya – Kingdom Animalia – Phylum Chordata – Class Mammalia – Order Primates – Family Hominidae – Genus Homo – Species sapiens
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 Bio1222 Tree talk ( Tree talk ( phylogenetic phylogenetic vocabulary) vocabulary) • Phylogeny pattern of evolutionary relationships among taxa (species or larger groups) Most recent common ancestor • Cenancestor (LUCA) Bio1222 Reading a tree: from root to tips Reading a tree: from root to tips Modern taxa at tips Common ancestors at nodes
Background image of page 2
3 Bio1222 Principles of Phylogenetics Evolutionary relationships reflect how recently taxa shared a common ancestor reconstruct phylogenies using similarity Rationale: similarity reflects shared ancestry (homology) Bio1222 Homology versus Homology versus homoplasy Homology (homologous traits) • Homoplasy
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}