Final answer:
Messenger RNA (mRNA) functions as the "blueprint" copies of nuclear genes, carrying the genetic information from DNA to the ribosomes where proteins are synthesized. The correct option is 2) mRNA
Step-by-step explanation:
The "blueprint" copies of nuclear genes are known as messenger RNA (mRNA). mRNA is essential in the process of protein synthesis as it carries the genetic message from the DNA in the nucleus to the ribosomes in the cytoplasm. Unlike mRNA, ribosomal RNA (rRNA) is a structural component of ribosomes, and transfer RNA (tRNA) brings amino acids to the ribosome to be assembled into proteins. mRNA is copied from DNA and it represents the instructions for the construction of proteins, playing a pivotal role in expressing genetic information.
Reviewing the Roles of RNA
- mRNA: Carries the genetic blueprint from DNA.
- rRNA: Forms the structural framework of ribosomes.
- tRNA: Transports amino acids to ribosomes.
Understanding the different types of RNA and their functions is crucial in molecular biology, as it explains the flow of genetic information from DNA to functional proteins, a fundamental concept known as the central dogma of molecular biology. The correct option is 2) mRNA