What does the graph look like?
The reason why Hershey and Chase labeled the viral DNA with radioactive phosphorous and not radioactive sulfur is because A) DNA contains phosphorous and no sulfur.
Answer: 64 codons
Explanation:
The triplet nature of the genetic code make for a possible 64 codons: 61 code for amino acids present in most polypeptide chains while the remaining 3 are special-sense codons, since they only signal for the termination of the polypeptide chain.
Thus, the pattern of the genetic code permits that a base appear more than once in a codon. For instance Adenine occurs twice in both AAU and AAC codons, which code for asparagine.
It is not a mineral because it is man made!
