A WORD ABOUT.. The Human Genome

A polyribonucleotide was prepared from the tetranucleotide UAUC. When it was subjected to peptide-synthesizing conditions, the polypeptide (Tyr—Leu— Ser—Ile) was obtained. What are the codons for these four amino acids  

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PROBLEM 18.7 A polynucleotide made from the dinucleotide UA turned out to be (Tyr—Ile) . How does this outcome confirm the results of Example 18.3 What new information does this experiment give  

PROBLEM 18.8 Mutations (caused by radiation, cancer-producing agents, or other means) may replace one base with another or may add or delete a base. What would happen to the protein produced if the sequence UUU were mutated to UCU If UCU were mutated to UCC What advantage is there to the genetic code in having redundant codons  

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