Please explain why... 7-55 You have discovered an alien life form that surprisin

Question

Please explain why...

7-55 You have discovered an alien life form that surprisingly uses DNA as its genetic material, makes RNA from DNA, and reads the information from RNA to make protein using ribosomes and tRNAs, which read triplet codons. Because it is your job to decipher the genetic code for this alien, you synthesize some artificial RNA molecules and examine the protein products produced from these RNA molecules in a cell-free translation system using purified alien tRNA5 and ribosomes. You obtain the results shown in Table Q7-55. From this information, which of the following peptides can be produced from poly UAUC? (a) ILe-Phe-Val-Tyr (b) Tyr-Ser-Phe-Ala (c) Ile-Lys-His-Tyr (d) Cys-Pro-Lys-Ala

Explanation / Answer

b) tyr-ser-phe-ala

this maybe due to wobble hypothesis. i.e. tRNA anticodon can have any base pair at the third poistion.

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