In this chapter, we focused on the translation of mRNA into proteins as well as on protein structure and function. Along the way, we found many opportunities to consider the methods and reasoning by which much of this information was acquired. From the explanations in the chapter, what answers would you propose to the following fundamental questions: What experimental information verifies that certain codons in mRNA specify chain termination during translation?

Video transcript

Everyone. Let's take a look at this question together. Which of the following is not a stop code on. So let's recall what a stop code on is to try to figure out which of the following is not one of them. So we know that a stop code on is a signal at the end of the polyp peptide chain during translation. And so when we're dealing with those stop code ons, there are three different stop code ons and they are you A U. G. A and you A G. And these are the only stop code ons. So looking at our answer choices, which one is not a stop code on? We'll answer choice A says you A. Which we know is here. So it is not answer choice. A answer choice B says U. G. A. Which we know is one of the stop code ons so does not answer choice B. Answer choice C. Says U A. G. Which we also know is a stop code on. So it is not answer choice C. And the only one that is listed here that is not a stop code on is answer choice D. Au G. Because that is not one of the three stop code ons. So it is the correct answer. I hope you found this video to be helpful. Thank you and goodbye