SAT Subject Biology Practice Question 285: Answer and Explanation

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Question: 285

15. Which of the following RNA sequences would be transcribed from the DNA sequence ATGCCTAGGAC?

A. TACGGATCCTG
B. UAGCGAUCCUG
C. AUGCCUAGGAC
D. UACGGAUCCUG
E. GCAUUCGAAGU

Correct Answer: D

Explanation:

D In RNA, the base thymine (T) is replaced with uracil (U), so choice A can be immediately eliminated. Further, A will always pair with U, and G will always pair with C. The only choice that has the bases paired correctly is choice D.

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