Question 3

# 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

5-ATGCATGCATGCATGCATGCATGCATGC-3

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

Answer

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 direction will be

3'- TACGTACGTACGTACGTACGTACGTACG − 5’

Therefore, the sequence of nucleotides on DNA polypeptide in direction is

5'- GCATGCATGCATGCATGCATGCATGCAT− 3’

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