L21 Systematics of Marine Bio

L21 Systematics of Marine Bio - Geol 107 L21 10/12/2011...

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Geol 107 L21 10/12/2011 1 Systematics of Marine Biology Classifying Life Linnean taxonomy set forth in Systema Naturae (1735) Three kingdoms divided into classes, orders, genera and species Still in use, although somewhat modified. The Linnaean system has proven robust Added levels of hierachy Added number of branches Genetic information reveals 5 domains of life Linnean Taxonomy updated Since 1990! Eukaryotes vs Prokaryotes Eukaryotes DNA in a nucleu DNA in a nucleus Prokaryotes DNA not in a nucleus DNA: Unifying thread of life >1.5 million species At the elemental level we are all made of star Ͳ stuff At the genetic level we all start with the same building blocks
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Geol 107 L21 10/12/2011 2 Phylogenetic Classification of Life Classification sequence ± Kingdom, Phylum, Class, Order, Family, Genus, Species All organisms have a unique Genus species name Humans are Homo sapiens Human Taxonomy Kingdom Ͳ Metazoa Phylum Ͳ
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L21 Systematics of Marine Bio - Geol 107 L21 10/12/2011...

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