Question Detail
Question
What is the base sequence of the DNA strand that would be complementary to the following single stranded DNA molecule 5' AGTTACCTGATCGTA 3'? a. 5' TCAATGGACTAGCAT 3' b. 3' TCAATGGACTAGCAT 5' c. 5' UCAAUGGACUAGCAU 3' d. 3' UCAAUGGACUAGCAU 5'
Correct Answer
Option B is the correct answer.
Detailed Explanation
DNA strands are antiparallel and complementary. For the given strand 5'-AGTTACCTGATCGTA-3', the complementary strand must be read in the opposite direction (3' to 5'). The base pairing rules are A-T and G-C. So, complement is 3'-TCAATGGACTAGCAT-5'. This matches option B.
Hint
Remember antiparallel (opposite direction) and A-T, G-C pairing.