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Question

UAG is triplet nitrogen base on m RNA. What will be the corresponding triplet on the coding strand?

A
TAG
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B
UAG
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C
ATC
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D
TUA
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Solution

The correct option is A TAG
  • In DNA transcription, the coding strand is the DNA strand whose base sequence corresponds to the base sequence of the RNA transcript produced (although with thymine replaced by uracil).
  • It is this strand which contains codons, while the non-coding strand contains anticodons.
  • Hence, UAG is triplet nitrogen base on m RNA, TAG will be the corresponding triplet on the coding strand.
  • So, the correct answer is 'TAG'.

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