A DNA strand with the sequence 3'AACGTAACG5' is transcribed. What is the sequence of the mRNA molecule synthesized?

AACGTAACG

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UUGCAUUGC

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TTGCATTGC

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AACGUAACG

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Solution

The correct option is B UUGCAUUGC

When a DNA strand with the sequence AACGTAACG is transcribed, the resultant sequence of the mRNA molecule synthesized is UUGCAUUGC.

This is based on the paring of nitrogenous bases adenine pairs with thymine (in DNA) and uracil (in RNA) and guanine with cytosine.

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