Class 12 Biology - Chapter Molecular Basis of Inheritance NCERT Solutions | If the sequence of one strand of DNA is

Welcome to the NCERT Solutions for Class 12th Biology - Chapter Molecular Basis of Inheritance. This page offers a step-by-step solution to the specific question from Excercise ".$ex_no." , Question 3: if the sequence of one strand of dna is written as....
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

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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