Bacteria and Eukaryotes Evolution
Basic aspects of the origins of bacteria and invertebrates are discussed. Evolutionary processes are reviewed concerning their positioning in the Tree of Life, including the available fossil records and phylogenetic reconstructions. Processes underpinning bacterial diversity within actual lineages are shown, together with main aspects distinguishing Archaea and Bacteria. The distinctive traits of Eukarya and Metazoa evolution are briefly discussed, together with their phylogenetic relationships.