Which of the following will form a palindromic sequence?

A. AGTCCTGA

B. GTTCCAAG

C. ATTGCAAT

D. GTTGGAAC

Explanation: The complementary sequence of ATTGCAAT is TAACGTTA. Thus, when the first is read from left to right and the later read from right to left the sequence of the bases is exactly the same. This is the criteria for a sequence to be palindromic.

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