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Which of the following acts as the blueprint or template for the process of protein synthesis that takes place on ribosomes?

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

Answer: D

Correct answer: mRNA

Messenger RNA is the working copy of the gene, and the ribosome reads its codons in order to assemble the polypeptide - so it is the template. DNA is the master copy that never leaves the nucleus in eukaryotes; tRNA brings the amino acids; rRNA builds and works the ribosome.

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