The first codon discovered by Nirenberg and Matthei was `:`

The first codon discovered by Nirenberg and Matthaei was

Assertion: The first codon discovered by Nirenberg and Matthaei was UUU. Reason: Genetic code translates the language of protein into that of RNA.

Cell was first discovered by

CPR was first discovered by

DNA was first discovered by-

Who first discovered ribozyme?