The overwhelming array of microorganisms—the smallest types of life—that occur everywhere is referred to as microbial diversity. Bacteria, archaea, and eukaryotes are the three main types of microorganisms. Bacteria and archaea are prokaryotes with a single chromosome that contains all of their genetic material. The majority of the genome in eukaryotes is distributed across several chromosomes. Microscopically identifying cell structure and metabolic function, Gram-staining methods, and genetic identification of RNA and DNA sequences have resulted in the identification of over 11,000 species of bacteria. Archaea is divided into two phyla with 500 named species between them. Eukaryotes are divided into eight super groups, all of which include single-celled species, and five of which are completely microbial.
- Track 1-1 Microbial Biodiversity
- Track 2-2 Microbial Systematic
- Track 3-3 Microbial Evolution