Domain-Specific Nucleotide Sequences

An analysis of species DNA found individual nucleotide sequences specific to the Archaea, Bacteria, and Eukaryota domains. Further investigation showed that all these sequences are the T-Arm in tRNA. None of those specific sequences occur in Viruses. The analysis was done for 165 species (30 Archaea, 66 Bacteria, 50 Eukaryota, and 19 DNA-based Viruses). The sequences differ from each other by a single nucleotide and, because of where they’re found and not found, may be an indication that a bacterium was the first form of life. Interesting anomalies were noted in fungi, algae, protozoa, and nematodes, suggesting that these organisms may be closer in biological function to Bacteria while the rest of Eukaryota may be closer to Archaea.