Which type of RNA is used to carry genetic code copied from DNA?

Rationale

mRNA is used to carry genetic code copied from DNA.

mRNA, or messenger RNA, is synthesized from a DNA template during transcription and serves as the intermediary that conveys genetic information from the nucleus to the ribosome for protein synthesis. This role is essential for translating the genetic code into functional proteins.

A (mRNA) CORRECT

As the correct answer, mRNA is specifically designed to carry the genetic code from DNA. It is produced during transcription and reflects the sequence of the DNA, which is then used during translation to synthesize proteins.

B (tRNA) YOUR ANSWER

Transfer RNA (tRNA) is primarily responsible for bringing the appropriate amino acids to the ribosome during protein synthesis. While tRNA is crucial for translation, it does not carry the genetic code itself; rather, it reads the mRNA sequence and facilitates the assembly of amino acids into proteins.

C (rRNA) YOUR ANSWER

Ribosomal RNA (rRNA) forms the core structural and functional components of ribosomes, the cellular machinery that orchestrates protein synthesis. Although rRNA plays an essential role in the translation process, it does not function to carry genetic information from DNA, which is the specific question being addressed.

D (None of the above.) YOUR ANSWER

This option suggests that none of the listed RNA types carry genetic code from DNA, which is incorrect. As established, mRNA directly serves this purpose by transporting the genetic instructions needed for protein synthesis.

Conclusion

mRNA is the type of RNA responsible for carrying genetic code copied from DNA, acting as a critical messenger in the flow of genetic information. The other RNA types, tRNA and rRNA, have distinct functions in protein synthesis but do not transport genetic information. Understanding these roles clarifies the processes of transcription and translation in gene expression.

Which type of RNA is used to carry genetic code copied from DNA?

mRNA is used to carry genetic code copied from DNA.

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