The prokaryotic cells that built stromatolites are classified as . The prokaryotic cells that built stromatolites are classified as . proteobacteria chlamydias spirocheteWhich group was not described in Woese's tree of life analysis? Which group was not described in Woese's tree of life analysis? Archaea Bacteria Prokarya Eukaryas gram-positive bacteria cyanobacteria

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.