1. (1.5 points) A gene encodes a polypeptide 20 amino acids long containing an a
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Question
1. (1.5 points) A gene encodes a polypeptide 20 amino acids long containing an alternating sequence of glycine and tyrosine. What are the sequences of nucleotides corresponding to this sequence in the following (please put in 5’ and 3’ orientations for each sequence).
a. The DNA strand that is read by RNA polymerase to produce the mRNA, assuming that Gly=GGG and Tyr=UAC in mRNA.
b. The DNA strand that is not transcribed (NOT read) by RNA polymerase
c. the anticodon portions of the tRNAs for each.
Explanation / Answer
a. the DNA strand that is read by the RNA polymerase is
5 CCC ATG CCC ATG CCC ATG CC 3
b.DNA strand that is not transcribed by the RNA polymerase is
3 GGG TAC GGG TAC GGG TAC GG 5
c. the anticodon for the DNA strands for each stands ;
DNA strand 1. ;5 CCC ATG CCC ATG CCC ATG CC 3
t RNA strand ; 3 GGG UAC GGG UAC GGG UAC GG 5
DNA strand 2; 3 GGG TAC GGG TAC GGG TAC GG 5
tRNA strand ; 3 CC UAC CCC UAC CCCUAC CCC 5
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