Which process copies specific portions of DNA into messenger RNA?

Which process copies specific portions of DNA into messenger RNA?

• A. Translation
• B. DNA Transcription
• C. Replication
• D. Transduction

Answer: (B)

Transcription is the process that copies specific portions of DNA into messenger RNA. Here, RNA polymerase binds to a gene’s promoter and reads the DNA template strand to synthesize an RNA molecule complementary to that region. Because transcription is regulated by promoters and other factors, only particular genes are transcribed at a given time, producing messenger RNA that will later be used to build a protein during translation. In contrast, replication copies the entire DNA genome into new DNA molecules; translation uses already-made mRNA to assemble proteins; transduction refers to gene transfer by a virus, not the production of mRNA from DNA.

Transcription is the process that copies specific portions of DNA into messenger RNA. Here, RNA polymerase binds to a gene’s promoter and reads the DNA template strand to synthesize an RNA molecule complementary to that region. Because transcription is regulated by promoters and other factors, only particular genes are transcribed at a given time, producing messenger RNA that will later be used to build a protein during translation. In contrast, replication copies the entire DNA genome into new DNA molecules; translation uses already-made mRNA to assemble proteins; transduction refers to gene transfer by a virus, not the production of mRNA from DNA.