The template strand of a section of the gene that encodes the SOD1 protein is TAC CGC TGC TTC CGG CAC ACG CACWrite down the sequence of the RNA bases which will be present in the mRNA transcribed from this gene:

Question

BlackTom AI · Accepted Answer

RNA is synthesized complementary to the DNA template strand. Use base-pairing rules for transcription: DNA A → RNA U, DNA T → RNA A, DNA C → RNA G, DNA G → RNA C. Applying these rules to each triplet of the given template yields the mRNA sequence.

Given template (grouped in codons): 
TAC  CGC  TGC  TTC  CGG  CAC  ACG  CAC

Transcription codon-by-codon (showing each base conversion):
- TAC → T→A, A→U, C→G  → AUG  
- CGC → C→G, G→C, C→G  → GCG  
- TGC → T→A, G→C, C→G  → ACG  
- TTC → T→A, T→A, C→G  → AAG  
- CGG → C→G, G→C, G→C  → GCC  
- CAC → C→G, A→U, C→G  → GUG  
- ACG → A→U, C→G, G→C  → UGC  
- CAC → C→G, A→U, C→G  → GUG

Concatenating the transcribed codons in the same order gives the full mRNA sequence:
AUG GCG ACG AAG GCC GUG UGC GUG

Why this is correct: each mRNA base is the complement of the corresponding base on the DNA template following the transcription rules; the first codon AUG is also the canonical start codon (methionine), consistent with a coding region. No alternative sequences are correct because any deviation would violate base-pairing (for example, writing U for a DNA T would be incorrect — DNA T pairs with RNA A, not U).

Conclusion: The transcribed mRNA sequence is AUG GCG ACG AAG GCC GUG UGC GUG, which matches the provided correct answer.

The template strand of a section of the gene that encodes the SOD1 protein is TAC CGC TGC TTC CGG CAC ACG CACWrite down the sequence of the RNA bases which will be present in the mRNA transcribed from this gene:简答题

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