Around 40 years ago, some researchers reported that they could transfer learning from one animal (Planaria, a kind of flatworm) to the other by feeding trained animals to untrained animals. Moreover, they claimed that RNA was the active molecule of learning. Given your knowledge of the roles of RNA and protein in cells, do you think that a specific memory (for illustration, remembering the base sequences of codons of the genetic code) could be encoded by a specific molecule of RNA and that this RNA could transfer that memory to the other person? In another words, someday, could you learn biology by popping an RNA pill? If you could, how would the pill work? If you think the RNA pill wouldn't work, can you suggest a reasonable hypothesis for the Planaria results? Explain how would you test your hypothesis?