Final answer:
The possible codons for the amino acid arginine (Arg) are AGA, AGG, CGA, CGC, CGG, and CGU.
Step-by-step explanation:
Due to the redundancy of the genetic code, multiple codons can code for the same amino acid. In the case of arginine (Arg), the possible codons are AGA, AGG, CGA, CGC, CGG, and CGU.