Statement I is correct. Transcription is the process of copying genetic information from one strand of the DNA into RNA. The resulting RNA molecule is complementary to the DNA strand from which it was transcribed. Statement II is also correct. A transcription unit in DNA is indeed defined by three main regions: the promoter, the structural gene, and a terminator. 1. The promoter is a DNA sequence that defines where transcription of a gene by RNA polymerase begins. 2. The structural gene contains the actual genetic information that is being transcribed. 3. The terminator is a sequence of nucleotides that signals the end of transcription.