When using a repeating trinucleotide sequence (such as 5?-AAC-3?) in a cell-free translation system, you will obtain:
(a) three different types of peptides, each made up of a single amino acid
(b) peptides made up of three different amino acids in random order
(c) peptides made up of three different amino acids, each alternating with each other in a repetitive fashion
(d) polyasparagine, as the codon for asparagine is AAC
(a) An mRNA composed of a trinucleotide repeat of AAC can be "read" in three different frames: AAC, ACA, and CAA. Thus, this mRNA will yield polyasparagine (codon = AAC), polythreonine (codon = ACA), and polyglutamine (codon = CAA).
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