• Since life forms evolved and became multi-cellular, organisms needed to make sure that the mechanism for copying the genetic material was more robust and hence preferred DNA.
  • The most popular disease-causing viruses bear RNA, not DNA, including the causative agents of COVID-19, AIDS, polio, influenza, etc. due to its hit-or-miss strategy of replication.
  • This genetic structure gives viruses the ability to create odd variants that possess a survival advantage against a vaccine or a drug.