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KCET · BIOLOGY · STD 12 - 5. Molecular Basis of Inheritance

In Structural gene, the template DNA strand has nucleotide sequences
3'-ATGCATGCATGCATGC-5'.
Find the correct and complimentary nucleotide sequence on coding strand.

  1. A 5'-ATGCATGCATGCATGC-3'
  2. B 3'-GCATGCATGCATGCAT-5'
  3. C 5'-TACGTACGTACGTACG-3'
  4. D 3'-TACGTACGTACGTACG-5'
Verified Solution

Answer & Solution

Correct Answer

(C) 5'-TACGTACGTACGTACG-3'

Step-by-step Solution

Detailed explanation

(C) 5'-TACGTACGTACGTACG-3',
The complementary nucleotide sequence runs in the opposite direction wrt template DNA strand i.e, 5' → 3' and nucleotide A is complementary to T and G to C. Hence, it is;
template stand → 3'-ATGCATGCATGCATGC-5'
complimentary strand → 5'-TACGTACGTACGTA CG-3'