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Chapter 15.3, Problem 1CC

WHAT IF? Suppose the mRNA being degraded in Figure 15.13 coded for a protein that promotes cell division in a multicellular organism. What would happen if a mutation disabled the gene for the miRNA that triggers this degradation?

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Q14: The figure below shows a ribosome in the process of translating an mRNA with the sequence: 5'..AUGCCGUAUGCUCUUUA...3' Elongation 3 5 3 3 LAUGEEGUAUGCU UACGGC CG AUGC EUT P sitez UAC A site A Met Pro Pro Met Anticodon Met Amino Incoming- tRNA terminus Pro © 2001 Sinauer Associates, Inc. The right side shows the ribosome with an empty A site aligned with the codon 5’UAU 3’. The next tRNA to occupy the A site on the ribosome will have what anti-codon sequence ( label 5' and 3’)? Keep in mind the wobble pairing rules and make sure your answer is consistent with the genetic code. Explain your answer. а. b. Suppose, just as the ribosome started translating the mRNA, the cell suddenly lost all of its alanine tRNAs. Using the figure above as a guide, draw and label the state the ribosome would arrest in.
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