If one strand of DNA has the sequence TCAGGCTATTCCCG, then the complementary sequence of the other strand is
A)AGUCCGAUAAGGGC.
B)AGTCCGATAAGGGC.
C)TCAGGCTATTCCCG.
D)UCAGGCUAUUCCCG.

Question

Quizplus · Accepted Answer

The complementary strand will have the base pairs that pair up with the original sequence. A pairs with T (or U in RNA), and C pairs with G. Therefore, the complementary sequence for TCAGGCTATTCCCG would be AGTCCGATAAGGGC. Choice A is incorrect because it uses the wrong RNA base (U instead of T). Choice C is incorrect because it is the same as the original sequence, not the complementary sequence. Choice D is incorrect because it uses the wrong RNA base (U instead of T) and it has an extra letter (the U).

If One Strand of DNA Has the Sequence TCAGGCTATTCCCG, Then