The correct answer is B) dRNA.
To elaborate, there are several types of RNA molecules that play crucial roles in the process of protein synthesis and gene expression. The main types include:
- mRNA (messenger RNA): This type carries the genetic information from DNA to the ribosome, where proteins are synthesized.
- tRNA (transfer RNA): This molecule helps in the translation process by bringing the appropriate amino acids to the ribosome, as specified by the mRNA.
- rRNA (ribosomal RNA): This is a key component of ribosomes, which are the cellular machinery that assembles proteins.
However, ‘dRNA’ is not an established type of RNA in molecular biology. It could potentially be a typo or confusion with similar terms, but it does not represent a recognized RNA molecule.