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Question
If the sequence of one strand of DNA is written as follows:
5' -ATGCATGCATGCATGCATGCATGCATGC-3'
Write down the sequence of complementary strand in 5'→3' direction.
Solution
The DNA strands are complementary to each other with respect to base sequence. Hence, if the sequence of one strand of DNA is
5'- ATGCATGCATGCATGCATGCATGCATGC − 3’
Then, the sequence of complementary strand in 5'→3' direction will be
3'- TACGTACGTACGTACGTACGTACGTACG − 5’
Therefore, the sequence of nucleotides on DNA polypeptide in the 5'→3' direction is
5'- GCATGCATGCATGCATGCATGCATGCAT− 3
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