If the sequence CCGTTATTGA is found on a strand of DNA helix, what sequence will be found on the complementary strand?
A) AGTTATTGCC
B) GGCAATAACT
C) GGACATCCCT
D) CGCACCTCCT
E) GGCAATTAAT
IMAT 2024 · Question 30
Q30 - Structure of DNA and RNA
Pinned
The correct answer is B) GGCAATAACT.
Pair each base: A with T, C with G.
CCGTTATTGA → GGCAATAACT
E is close but goes wrong at positions 7 and 9. (Strictly, the complementary strand runs the other way, but the options are written base by base, so you only need to pair each position.)
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