Molecular Biology/Genetics USMLE Step 1 Practice Question
An investigator studying protein synthesis in human stem cells isolates tRNA molecules bound to mRNA molecules. The isolated tRNA molecules have inosine in the 5' position of the anticodon; of these, some are bound to adenine, some to cytosine, and some to uracil at the 3' position of the mRNA codon. Which of the following properties of the genetic code is best illustrated by this finding?
Answer choices
- ASpecificity of the start codon
- BSpecificity of stop codons
- CDegeneracyCorrect answer
- DUnambiguity
- ENon-overlapping
- FUniversality
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