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Ch. 20 - DNA Tools and Biotechnology

Chapter 4, Problem 2

Which of the following is true of a codon? (A) It never codes for the same amino acid as another codon. (B) It can code for more than one amino acid. (C) It can be either in DNA or in RNA (D) It is the basic unit of protein structure

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Welcome back. Let's look at our next question. It says which of the following statements about a code on is false. So let's look through our answers. Remembering we're looking for a false statement. Choice A says one amino acid can be produced by more than one cotton. Well this is true. If you look at a chart of code owns and the amino acids you'll see that each amino acid can be coded for by 23 or even four different code owns. So choice A. Cannot be our answer choice B says it could be A D. N. A. Or RNA sequence of three nucleotides. This is also true. While it's the M. RNA strand that's actually used in translation. Um We could look at A D. N. A. Sequence. Um This of the sense strand which would correspond to the M. R. N. A. Sequence to see those series of three base pairs that make up protons. Just remembering that we have the T. Instead of you. So Choice B. Cannot be our answer choice. C says it can code just one amino acid. Well this is true. While each amino acid can be coded for by different code owns. Each code on. Only codes for a single amino acid which I see is not correct. So we just got one left choice D. The termination code on. Can code an extra amino acid. Well that is false. The termination code on is a code on that signals for translation to stop at that point. It does not code for an amino acid. So choice D. Is our correct answer. It's a false statement about cadence saying the termination code on can code an extra amino acid. See you in the next video.