Question

During transcription from DNA to RNA which base occurs only in RNA

Answer 1

Uracil

Step-by-step explanation:

Four nucleotides form an RNA molecule that consist of bases like adenine (A), uracil (U), cytosine (C), and guanine (G). Uracil in RNA replaces thymine in DNA.

Answer 2

The ending of transcription; occurs when RNA polymerase crosses a stop (termination) sequence in the gene. Process in which genetic instructions in DNA are copied to form a complementary strand of mRNA. Process in which genetic instructions in mRNA are read to synthesize a protein.