Topic 4B.3 Domains, Kingdoms or Both?

gel electrophoresis

a method of separating fragments of proteins or nucleic acids based on their electrical charge and size

phylogenetic tree

model used to show the relationship between different groups of organisms

endosymbiosis

organisms that live inside the cells or the body of another organism

Monera

a kingdom in the five-kingdom classification system that contains the Archaea and Eubacteria

extremophiles

bacteria that can survive extreme conditions of heat, cold, pH, salinity and pressure