If one strand of a DNA molecule has the sequence of bases 5'ATTGCA3', the other complementary strand would have the sequence
A) 5'TAACGT3'.
B) 5'TGCAAT3'.
C) 5'UAACGU3'.
D) 3'UAACGU5'.
E) 5'UGCAAU3'.

Question

Quizplus · Accepted Answer

Since DNA strands are complementary to each other, we can determine the sequence of the other strand by pairing each base with its complementary base. In this case, the complementary base for A is T, for T is A, for G is C, and for C is G. Therefore, the complementary strand to 5'ATTGCA3' would be 5'TGCAAT3'.

If One Strand of a DNA Molecule Has the Sequence