Question

which type of rna carries genetic instructions for building a specific protein?○ trna and rrna○ mrna only○ rrna only○ mrna and trna

Explanation:

Messenger RNA (mRNA) is transcribed from DNA and carries the specific genetic code sequence that dictates the amino acid order for building a protein. Transfer RNA (tRNA) delivers amino acids to the ribosome, while ribosomal RNA (rRNA) forms part of the ribosome structure, but neither carries the core protein-building instructions.

Answer:

B. mRNA only