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22 October, 17:19

The DNA sense strand for a particular amino acid is 5′-ATG-3′. What RNA sequence would be transcribed for this codon, what tRNA anticodon would recognize it, and what amino acid would be added in response to this codon?

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  1. 22 October, 17:39
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    RNA sequence - 5' AUG 3',

    tRNA anticodon - 3' UAC 5'

    Amino acid - methionine

    Explanation:

    DNA contains two strands of sense and antisense. The mRNA sequence is produced by the antisense strand of DNA. So if the DNA sense strand has ATG sequence then according to the complementary base pairing the sequence against it would be 3' TAC 5'.

    In RNA in place of thymine, Uracil comes so here according to complementary base pairing rule the sequence of codon in RNA would be 5' AUG 3'. As tRNA contains anticodon sequence which is complementary to mRNA codon sequence therefore the anticodon sequence would be 3' UAC 5'.

    Every triplet codon in mRNA codes for a particular amino acid and AUG codon is called start codon which codes for methionine. So methionine would be added against AUG codon.
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