If the mRNA codon for threonine is ACC, what is the complementary DNA template strand sequence?

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Study for the A2 Genetics Test focused on Genetic Control of Proteins and Gene Expression. Utilize flashcards and multiple-choice questions, with hints and detailed explanations for each question. Prepare thoroughly for your exam!

Multiple Choice

If the mRNA codon for threonine is ACC, what is the complementary DNA template strand sequence?

Explanation:
The template DNA strand is the antiparallel complement to the mRNA sequence made during transcription. For the mRNA codon ACC, each base pairs with its DNA partner: A with T, and C with G. So the matching template strand sequence is 3'-TGG-5'. Often this is written simply as TGG when the orientation is understood. This is why TGG is the correct complementary template strand for the mRNA codon ACC.

The template DNA strand is the antiparallel complement to the mRNA sequence made during transcription. For the mRNA codon ACC, each base pairs with its DNA partner: A with T, and C with G. So the matching template strand sequence is 3'-TGG-5'. Often this is written simply as TGG when the orientation is understood. This is why TGG is the correct complementary template strand for the mRNA codon ACC.

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