Consider a strand of DNA with the sequence GAATTCGGCA. What is the sequence of the complementary strand?

Question

Quizplus · Accepted Answer

The complementary strand will have the same nucleotide sequence as the original strand, but with complementary bases. In DNA, A always pairs with T and C always pairs with G. So the complementary strand of GAATTCGGCA would be CTTAAGCCGT. Option A and B are incorrect because they do not have complementary base pairs. Option D is the same as the original strand, not its complement.

Consider a Strand of DNA with the Sequence GAATTCGGCA