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5’ TAG TTT CGA TCT GGA 3’ 1. Here is the coding sequence from a section of a gene (it is the middle of the sequence, so it has no AUG). What is the mRNA sequence of this section of gene? (1 mark)

Question

5’ TAG TTT CGA TCT GGA 3’

  1. Here is the coding sequence from a section of a gene (it is the middle of the sequence, so it has no AUG). What is the mRNA sequence of this section of gene? (1 mark)
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Solution

The mRNA sequence is created by transcribing the DNA sequence. In this process, Adenine (A) pairs with Uracil (U), Thymine (T) pairs with Adenine (A), Cytosine (C) pairs with Guanine (G), and Guanine (G) pairs with Cytosine (C).

So, for the given DNA sequence 5’ TAG TTT CGA TCT GGA 3’, the corresponding mRNA sequence would be 5' AUC AAA GCU AGA CCU 3'.

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