Which type of RNA carries the genetic message from the nucleus to the ribosome?

Which type of RNA carries the genetic message from the nucleus to the ribosome?

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

Answer: (A)

Messenger RNA carries the genetic message from the nucleus to the ribosome. In transcription, the DNA template is used to synthesize a complementary mRNA strand, which then exits the nucleus and travels to the cytoplasm. At the ribosome, the sequence of codons in mRNA directs which amino acids are added, with tRNA delivering each amino acid according to the anticodon it contains. The other RNA types have different roles: tRNA shuttles amino acids to the ribosome, rRNA forms the core of the ribosome and helps catalyze peptide bond formation, and snRNA participates in splicing of pre-mRNA in the nucleus.

Messenger RNA carries the genetic message from the nucleus to the ribosome. In transcription, the DNA template is used to synthesize a complementary mRNA strand, which then exits the nucleus and travels to the cytoplasm. At the ribosome, the sequence of codons in mRNA directs which amino acids are added, with tRNA delivering each amino acid according to the anticodon it contains. The other RNA types have different roles: tRNA shuttles amino acids to the ribosome, rRNA forms the core of the ribosome and helps catalyze peptide bond formation, and snRNA participates in splicing of pre-mRNA in the nucleus.