Which DNA template sequence corresponds to the tryptophan codon in mRNA?

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Study for the Campbell Biology Concepts and Connections Test. Explore flashcards and multiple-choice questions, complete with hints and explanations. Prepare for your success!

Multiple Choice

Which DNA template sequence corresponds to the tryptophan codon in mRNA?

Explanation:
Transcription uses the DNA template strand to build mRNA that is complementary to it. The tryptophan codon in mRNA is UGG. In base pairing, U pairs with A and G pairs with C. Following that, the DNA template sequence must be ACC to pair with UGG. So ACC is the template that would produce the mRNA codon UGG. (The coding DNA strand would be TGG, which matches the mRNA codon with T replacing U.)

Transcription uses the DNA template strand to build mRNA that is complementary to it. The tryptophan codon in mRNA is UGG. In base pairing, U pairs with A and G pairs with C. Following that, the DNA template sequence must be ACC to pair with UGG. So ACC is the template that would produce the mRNA codon UGG. (The coding DNA strand would be TGG, which matches the mRNA codon with T replacing U.)

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