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Which one of the following is sequence on corresponding coding strand, if the sequence on mRNA formed is as follows
5'AUCGAUCGAUCGAUCGAUCGAUCG AUCG 3'?

Option: 1

5'UAGCUAGCUAGCUAGCUAGCUAGC UAGC 3'


Option: 2

3'UAGCUAGCUAGCUAGCUAGCUAGCUAGC 5'


Option: 3

5'ATCGATCGATCGATCGATCGATCGATCG 3'


Option: 4

3'ATCGATCGATCGATCGATCGATCGATCG 5'


Answers (1)

best_answer

To find the corresponding coding strand, we replace each base according to the base pairing rules:

A (mRNA) pairs with U (coding DNA)
U (mRNA) pairs with A (coding DNA)
C (mRNA) pairs with G (coding DNA)
G (mRNA) pairs with C (coding DNA)

Applying these base pairing rules to the given mRNA sequence, we get:

5'AUCGAUCGAUCGAUCGAUCGAUCG AUCG 3'
3'TAGCTAGCTAGCTAGCTAGCTAGC TAGC 5'

Therefore, the correct corresponding coding strand sequence is 3'TAGCTAGCTAGCTAGCTAGCTAGC TAGC 5'.

Option 3 is the correct answer. 

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Gunjita

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