Which molecule carries genetic information from the nucleus to the ribosome during protein synthesis?

Which molecule carries genetic information from the nucleus to the ribosome during protein synthesis?

• A. DNA
• B. mRNA
• C. tRNA
• D. rRNA

Answer: (B)

Genetic information is copied from DNA into a messenger RNA (mRNA) in the nucleus. This mRNA then travels to the ribosome in the cytoplasm, where its sequence is read to assemble the corresponding protein. The ribosome uses the mRNA as a template to recruit transfer RNA (tRNA) molecules that bring specific amino acids, building the protein chain. DNA itself stays in the nucleus and isn’t transported to the ribosome, while tRNA and rRNA play roles in decoding and constructing proteins but do not carry the gene’s information from the nucleus to the ribosome.

Genetic information is copied from DNA into a messenger RNA (mRNA) in the nucleus. This mRNA then travels to the ribosome in the cytoplasm, where its sequence is read to assemble the corresponding protein. The ribosome uses the mRNA as a template to recruit transfer RNA (tRNA) molecules that bring specific amino acids, building the protein chain. DNA itself stays in the nucleus and isn’t transported to the ribosome, while tRNA and rRNA play roles in decoding and constructing proteins but do not carry the gene’s information from the nucleus to the ribosome.