I was interpreting a question, and it does not fit with my knowledge and common sense. This is the problem with mystery... Part of the sequence of a gene along the template strand for transcription was shown to be 5'-AGCTCA-3' Using that partial DNA sequence, determine the corresponding sequence of the transcript encoded by that region of the gene. A)5'-UGCAGU B)5'-UGAGCU C)5'-UGACGU D)5'-UCGAGU I thought the answer was D. Because in the given sequence in the question and option D fits according to rules [A always matches with T(or U), C always matches with G] Now, my answer: A fits with U. G fits with C in option D. C fits with G. T fits with A. And so on. If you are suspicious, I can show you. 5'-AGCTCA-3' 5'-UCGAGU It all fits and make correct strand. I think... However, the answer was B. :surprised How could this possible? I gathered all my knowledge, contemplated for almost half and hour, thinking how B can be the answer. B does not fit with any of the given strand. Is there something wrong with the answerbook or there is something I did not learned about it? My prof told students to report any mistakes in the problem-answer sheet he gave to us. However, I feel not willing to go to him and talk about this. What if I am wrong?