A DNA sequence encoding a five-amino acid polypeptide is...

Question

A DNA sequence encoding a five-amino acid polypeptide is given below.
...ACGGCAAGATCCCACCCTAATCAGACCGTACCATTCACCTCCT...
...TGCCGTTCTAGGGTGGGATTAGTCTGGCATGGTAAGTGGAGGA...

Locate the sequence encoding the five amino acids of the polypeptide, and identify the template and coding strands of DNA.

Accepted Answer

Hi, everybody. Let's look at our next question. A codon is a sequence of three nucleotides that forms a unit of genomic information encoding a particular amino acid, which of the following lists of codons coated with amino acid is incorrect. A arginine is coded by A G A B vein is coded by G U A C. Methionine is coded by U A G and the trip to Fan Skoda by U G G. Well, I'm looking for the incorrect answer and if I can recall this, I can go straight to my incorrect answer of choice. C because methionine is the amino acid that is coded for by the start codon. And that's always a good thing to know the start codon and the three stop codons are good to be familiar with. So that happens to be A U G, not U A G as is in our problem. So that is our incorrect answer. But to be thorough, let's look at our other answers and we would do that by checking a code on chart. So I'm going to post one up here. There's different versions of them. Some are circular. This is the four by four grid version, first letter on the left going down in rows, the four possibilities U C A G across the top in columns. Again, those four possibilities U C A G, the second letter and then on the right within each of the boxes created from top to bottom U C A G, the possibility for the third letter on the code on. So let's double check our answer choices. So I say arginine coated by A G A, let's look up a G A. So we go down to row A across to column G and then find third letter A and we find a G A. Absolutely, we see that it does indeed code for arginine. So since choice A is correct, that's not our answer choice. Then for choice B, it says Valine is coded by G U A. So we go down to row G over to the first column for you. And then within that box, we look for the third letter A and that does in de code for the amino acid bale. Since that's correct, that's also not our answer. And finally choice D trip to fan is coded by U G G. So starting with row U and then column G and then third letter G. And we see that as indeed trip to fan. So not our correct answer. So which of the following list of codons with amino acid is incorrect choice. C methionine is coded by U A G see you in the next video.

A DNA sequence encoding a five-amino acid polypeptide is given below.
...ACGGCAAGATCCCACCCTAATCAGACCGTACCATTCACCTCCT...
...TGCCGTTCTAGGGTGGGATTAGTCTGGCATGGTAAGTGGAGGA...

Locate the sequence encoding the five amino acids of the polypeptide, and identify the template and coding strands of DNA.

Key Concepts

DNA Structure and Function

Transcription and Translation

Template and Coding Strands

Watch next

A DNA sequence encoding a five-amino acid polypeptide is given below....ACGGCAAGATCCCACCCTAATCAGACCGTACCATTCACCTCCT......TGCCGTTCTAGGGTGGGATTAGTCTGGCATGGTAAGTGGAGGA...Locate the sequence encoding the five amino acids of the polypeptide, and identify the template and coding strands of DNA.

Key Concepts

DNA Structure and Function

Transcription and Translation

Template and Coding Strands

Watch next

A DNA sequence encoding a five-amino acid polypeptide is given below.
...ACGGCAAGATCCCACCCTAATCAGACCGTACCATTCACCTCCT...
...TGCCGTTCTAGGGTGGGATTAGTCTGGCATGGTAAGTGGAGGA...

Locate the sequence encoding the five amino acids of the polypeptide, and identify the template and coding strands of DNA.