Final answer:
The statement is true; adenine pairs with uracil in RNA during transcription. RNA has uracil instead of thymine, which pairs with adenine to translate the genetic code into proteins.
Step-by-step explanation:
The statement is true: As the DNA molecule is transcribed into RNA, the pairing of bases changes such that adenine (A) no longer pairs with thymine (T), but rather with uracil (U). This change occurs because RNA contains a different suite of nitrogenous bases compared to DNA. While DNA has the bases adenine, guanine (G), cytosine (C), and thymine, RNA contains adenine, guanine, cytosine, and uracil.
In the context of DNA, adenine pairs with thymine, and these base pairs are stabilized by two hydrogen bonds. In contrast, when RNA is synthesized, uracil takes the place of thymine and pairs with adenine. This pairing is crucial for the protein synthesis process, where RNA plays a vital role in translating genetic code into functional proteins. It's worth noting that both uracil and thymine pair with adenine through hydrogen bonding, but uracil lacks the methyl group found in thymine, making uracil the unmethylated form of thymine.