University of Toronto (UofT) University of Toronto ANT100Y1 Introduction to Anthropology Midterm Practice Test

The principal strand of genetic material involved in translation is mRNA (messenger RNA). During the process of translation, mRNA serves as the template that carries the genetic information from DNA to the ribosomes, where proteins are synthesized. The sequence of nucleotides in mRNA is read in sets of three nucleotides, known as codons, each corresponding to a specific amino acid. This sequence ultimately directs the assembly of amino acids into the polypeptide chain that forms a protein.

While DNA is critical as the original template from which mRNA is synthesized, it remains in the nucleus and does not participate directly in the translation process. tRNA (transfer RNA) plays an essential role in translation as well, by bringing the appropriate amino acids to the ribosomes based on the codons in the mRNA. Ribosomal RNA (rRNA) is another important component, as it makes up part of the structure of ribosomes and aids in the catalysis of peptide bond formation. However, mRNA is the primary strand that directly conveys the genetic instructions from DNA to facilitate the creation of proteins, making it the correct answer in the context of the question.