MICR 2420 Lecture 5: Lecture 5_Eukaryotic Microbes
12 May 2017
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Document Summary
Eukaryotic diversity is profound: wildest diversity in form and size in the tree of life. From blue whales and sequoias to tiny algae such as ostreococcus tauri and structurally beautiful diatoms. For eukaryotes, rrna genes are ambiguous: thus most eukaryotes conduct oxygenic photosynthesis, or heterotrophy, or both. Where do animals (metazoa) fit into the eukaryotic tree: emerging utility of genome sequencing is allowing us to determine this for the first time, need something better, baldauf et al. , university of york. Look for a gene deletion or insertion unique to one clade. Found a stretch of dna encoding 12aa - present in animals and fungi but absent from plants and most protists. It is important to define the differences clearly. So they can be exploited, eg treatment of fungal infections: elongation factor - 1a (ef-1a, thus animals and fungi fit in one class - the opisthokonts, animals can be used as models for research instead of humans.
