It seems likely that most if not all the genetic information in any organism is carried by nucleic acid - usually by DNA, although certain small viruses use RNA as their genetic material.
This quote highlights the fundamental role of nucleic acids—DNA and RNA—in storing genetic information. It underscores the widespread reliance on DNA, while also acknowledging exceptions like some viruses that utilize RNA. Understanding this molecular basis of genetics is crucial for fields such as genetics, molecular biology, and medicine. Recognizing the diversity and mechanisms of genetic material helps in comprehending inheritance, evolution, and disease processes. The simplicity and elegance of this biochemical system also exemplify how complex biological functions are encoded in relatively straightforward molecules.
