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Multiple Choice
Which process produces an RNA copy of a DNA molecule?
A
Replication
B
Reverse transcription
C
Transcription
D
Translation
Verified step by step guidance
1
Understand the question: The problem is asking which biological process creates an RNA copy from a DNA molecule. This involves understanding the central dogma of molecular biology, which describes the flow of genetic information.
Review the processes listed: Replication is the process of copying DNA to produce an identical DNA molecule. Reverse transcription involves synthesizing DNA from an RNA template. Translation is the process of synthesizing proteins from an mRNA template. Transcription is the process of synthesizing RNA from a DNA template.
Focus on transcription: During transcription, an enzyme called RNA polymerase binds to a specific region of the DNA (the promoter) and synthesizes a complementary RNA strand using one strand of the DNA as a template.
Clarify the role of transcription: The RNA produced during transcription can be messenger RNA (mRNA), transfer RNA (tRNA), or ribosomal RNA (rRNA), depending on the gene being transcribed. This RNA is then used in subsequent processes like translation (if it is mRNA).
Conclude: Based on the definitions and roles of the processes, transcription is the correct answer because it specifically refers to the production of an RNA copy from a DNA template.