PCAT Biological Processes – mRNA Transcription From dsDNA
- Apr 19, 2018
- PCAT Question of the Day
The mRNA transcribed from a dsDNA molecule has a partial sequence of 5′-AUGAAUC-3′. The corresponding sequence on the sense DNA strand is:
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D is correct. The sense (or coding) DNA strand should have the same sequence as the mRNA strand produced, except the DNA strand should contain thymine instead of uracil. Here, Choices B and C represent mRNA, not DNA, and Choice A is the sequence of the antisense (or template) DNA strand.
antisense DNA: 3′-TACTTAG-5′
sense DNA: 5′-ATGAATC-3′
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