Final answer:
In a repeating copolymer assay involving adenine (A) and uracil (U), the incorporated amino acids would be lysine (coded by AAA) and phenylalanine (coded by UUU), resulting in a polymer with repeating sequences of these two amino acids.
Step-by-step explanation:
The question relates to a synthetic copolymer assay involving nucleotides adenine (A) and uracil (U). In the context of molecular biology and specifically, protein synthesis, a copolymer assay is used to decipher which amino acids are encoded by specific nucleotide sequences. Referring to a codon chart, which lays out the mRNA codon to amino acid translation, we can ascertain amino acids corresponding to codons composed of just adenine (A) and uracil (U).
When considering an RNA sequence composed of only A's and U's, certain codons can be formed: AAA, AUA, UAA, UUA, AUU, and UUU. Based on the standard genetic code, these codons result in the incorporation of the amino acids lysine (AAA) and phenylalanine (UUU). In this case, the copolymer composed of adenine and uracil would feature these two amino acids.
It is noteworthy that the question posed refers to repeated copolymers of A and U, implying that poly-adenine (poly-A) would correspond to poly-lysine due to the AAA codon, and poly-uracil (poly-U) would correspond to poly-phenylalanine due to the UUU codon. Thus, a repeating AU copolymer would incorporate stretches of lysine and phenylalanine.