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A portion of the template strand of DNA has the following sequence: 5' ATA GCG TTC...

A portion of the template strand of DNA has the following sequence: 5' ATA GCG TTC CAC CGC 3'. Assume the first codon for the peptide begins with the first nucleotide of the portion of mRNA and there are no introns (May not start at AUG). Enter the mRNA and amino acid sequence below

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Answer #1

Sequence of the given template DNA strand is...

5' ATA GCG TTC CAC CGC 3'

RNA polymerase synthesizes ribonucleotides in 5'→3' direction. So, the RNA polymerase will bind at the 3' end of template DNA strand and initiate the process of transcription and will continue to elongate the RNA chain from right to left onward. After transcription of this portion of template DNA strand the mRNA will be generated. And the sequence of the transcripted mRNA will be...

5' GCG GUG GAA CGC UAU 3'

Assuming that the first codon for the peptide begins with the first nucleotide of the portion of mRNA and there are no introns (may jot start at AUG), the amnio acid sequence will be as following...

Ala - Val - Glu - Arg - Tyr

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