The complimentary DNA sequence of the DNA strand 5'-GAATTC-3' would be:
Answer & explanation
Correct answer: option 3
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'