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Which of the following options best depicts the flow of information when a gene directs the synthesis of a cellular component?

A) RNA → DNA → RNA → protein
B) DNA → RNA → protein
C) protein → RNA → DNA
D) DNA → tRNA → mRNA → protein

1 Answer

3 votes

Answer:

B) DNA - RNA - protein

Step-by-step explanation:

Gene expression is the process by which information from a gene is used in the synthesis of a functional gene product, usually protein. Gene expression include steps such as

• transcription – part of DNA is copied into mRNA via an enzyme RNA polymerase

• RNA splicing – formed mRNA during transcription is not mature so it need to be proceed (e.g. excision of introns). Mature mRNA are then exported from nucleus to cytoplasm

• Translation – mRNA serves as information that codes for the synthesis of one or more proteins.

User Guillaume Belrose
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