The genetic code was originally deciphered, in part, by experiments in which synthetic polynucleotides with repeating sequences were used as mrnas to direct protein synthesis in cell-free extracts. under these conditions, ribosomes could be made to start translation anywhere within the rna molecules, with no start codon necessary. what peptide would be made by translation from a synthetic mrna made of the repeating trinucleotide ucgucg…?

Serine-serine-serine...

Explanation:

Serine is one of the twenty standard amino acids that make various proteins. Serine is encoded by a total of six genetic codes. These genetic codes for serine are UCU, UCC, UCA, UCG, AGU, and AGC. The given synthetic mRNA consists of repeats of triplet code "UCG". Therefore, the resultant polypeptide obtained by translation of the given mRNA would have repeating serine residues bonded together by peptide bonds.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.