BSC 2011 Lecture Notes - Lecture 2: Cyanobacteria, Chloroplast, Mitochondrion

• School: University of Florida
• Department: Biology - Biological Sciences
• Course: BSC 2011
• Professor: Norman Douglas, Nicole Gerlach, Todd Palmer

Document Summary

Taxon: any group of species that we designate with a name. Clade: a group that consists of all the evolutionary descendants of a common ancestor. Referred to as monophyletic: we identify a clade by picking any point on a tree and tracing all the descendant lineages. Takeaways: all life is related by phylogeny, we use evidence to make hypotheses about these relationships. There are three domains of life: bacteria. Most importantly defined by its feature of photosynthesis: co2 + h2o glucose + o2, majority of inputs come from water and the air. Origin of photosynthesis: can be seen in very old fossils from areas with high tidal currents, increased as free oxygen in the atmosphere increased, oxygenic photosynthesis has drastically influenced the course of evolutionary history on earth. Heterotroph captured photosynthetic cell to create a cell with both mitochondrion and a chloroplast.