Question

The region of dna where rna synthesis begins is the

Answer 1

Initiation. A region at the beginning of the gene called a promoter—a particular sequence of nucleotides—triggers the start of transcription.
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Answer 2

? The primary difference between transcription and DNA replication is that only a single strand of mRNA is produced during transcription. During DNA replication both strands need to be copied and DNA polymerase needs to work on both strands at the same time. Because DNA polymerase can only add new bases onto the free 3’ end of a molecule the two strands cannot be synthesized in the same way. The leading strand is synthesized as a continuous chain. The lagging strand is synthesized in pieces. In contrast, the single mRNA molecule is synthesized as a continuous strand. The other difference between the two processes is that during DNA synthesis the entire chromosome is copied. During transcription specific genes are transcribed in response to signals such as transcription factors.



In the first of the two stages of making protein from DNA, a gene on the DNA molecule is transcribed into a complementary mRNA molecule. Stage 1: Initiation. A region at the beginning of the gene called a promoter—a particular sequence of nucleotides—triggers the start of transcription.