Final answer:
In RNA, the base pairs are AU and GC. Adenine (A) pairs with uracil (U), and guanine (G) pairs with cytosine (C).
Step-by-step explanation:
In RNA, the base pairs are AU and GC.
Base pairing takes place between a purine and pyrimidine. In RNA, adenine (A) always pairs with uracil (U), and guanine (G) always pairs with cytosine (C).
For example, if one RNA strand reads AUGCCAGU, the other strand will be made up of the complementary bases: UACGGUCA.