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Home Questions RNXSJTBEXF
Target Exam

CUET

Subject

Biology

Chapter

Molecular Basis of Inheritance

Question:

The complimentary DNA sequence of the DNA strand 5'-GAATTC-3' would be:

Options:

3'-GAATTC-5'

5'-CTTAAG-3'

3'-CTTAAG-5'

3'-CTTUUG-5'

Correct Answer:

3'-CTTAAG-5'

Explanation:

The correct answer is Option (3) → 3'-CTTAAG-5'

DNA pairing rules state that A (adenine) pairs with T (thymine) and G (guanine) pairs with C (cytosine).

The given strand is 5'-GAATTC-3'. Following the base pairing rules, the complementary sequence would be 3'-CTTAAG-5'. So, the complementary DNA sequence of 5'-GAATTC-3' is: 3'-CTTAAG-5'

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