Which statement about the flow of genetic information is true?
A) Proteins encode information that is used to produce other proteins of the same amino acid sequence.
B) RNA encodes information that is transcribed into DNA, and DNA encodes information that is translated into proteins.
C) Proteins encode information that can be translated into RNA, and RNA encodes information that can be transcribed into DNA.
D) DNA encodes information that is transcribed into RNA, and RNA encodes information that is translated into proteins.
E) DNA encodes information that is translated directly to proteins, without any intermediaries.

Question

Quizplus · Accepted Answer

The flow of genetic information starts with DNA, which encodes the genetic instructions for the synthesis of proteins. This information is transcribed into RNA through the process of transcription, and then translated into proteins through the process of translation. Therefore, DNA encodes information that is transcribed into RNA, and RNA encodes information that is translated into proteins. Option A is incorrect, as proteins alone cannot encode information to produce other proteins. Option B is incorrect, as RNA cannot be transcribed into DNA. Option C is incorrect, as RNA cannot be transcribed into DNA, and proteins cannot be directly translated into RNA. Option E is incorrect, as there needs to be an intermediate step of RNA synthesis.

Which Statement About the Flow of Genetic Information Is True