Which of the following techniques was carried out by Nirenberg and Matthaei in 1961 to determine the first codon?

Labeled peptide binding to a ribosome

In vitro synthesis of a polypeptide using UUUUU

Mixed co-polymer mRNA synthesis

Which of the following techniques was carried out by Nirenberg and Mat

1.	Which of the following techniques was carried out by Nirenberg and Matthaei in 1961 to determine the first codon?
A.	In vitro synthesis of a polypeptide using UUUUU
B.	Labeled peptide binding to a ribosome
C.	Mixed co-polymer mRNA synthesis
D.	none of the above
Answer» B. Labeled peptide binding to a ribosome