GEOL 107 Lecture Notes - Lecture 5: Carl Linnaeus, Protist, Platypus

• School: Queen's University
• Department: Geological Sciences and Geological Engineering
• Course: GEOL 107
• Professor: Guy M Narbonne

Document Summary

Prokaryote"s: very simple organisms, unicellular, lack of a cell nucleus or organelles. Eukaryotes: more complex, dna in nucleus, unicellular or multicellular, contains organelles. 3 domains: bacteria mostly normal" prokaryotes, archaea mostly extremophile" prokaryotes, eukarya all single and multi-celled eukaryotes. Fungi multicellular, non-motile, absorb nutrients from dead or living organisms. Carl linnaeus 1707-1778: gave view of branches of life. Domain: eucarya (along with plants, fungi, unicellular eukaryotes) Kingdom: anamalia (along with corals, clams, snails, crabs, insects) Subphylum: vertebrata (along with bony fish, amphibians) Genus: homo (we are the only surviving member) Genus and higher levels are capitalized when used formally. Organization systems 2 major techniques: cladistics (phylogenetic systematics, modern approach to systematics, based on patterns of shared common ancestry, groups of taxa that share features into clades, less subjective than traditional morphology. How it works: natural groups (clades) inferred on basis of shared derived characters, synapomorphies. Shared primitive characteristics and are relatively unhelpful: plesiomorphies.