Question

If the sequence of one strand of DNA is written as follows:

5'-ATGCATGCATGCATGCATGCATGCATGC-3'

Write down the sequence of the complementary strand in 5'→3' direction.

Answer 1

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'