What is the role of messenger RNA (mRNA) in gene expression?
Correct Answer: mRNA carries genetic information from DNA to ribosomes, where proteins are synthesized.
- Step 1: DNA contains the genetic information needed to make proteins.
- Step 2: When a gene is needed, the DNA is copied into a molecule called messenger RNA (mRNA).
- Step 3: The mRNA leaves the nucleus of the cell and travels to the ribosomes, which are the sites of protein synthesis.
- Step 4: At the ribosomes, the mRNA is read in sets of three bases (codons), which correspond to specific amino acids.
- Step 5: The ribosomes use the information from the mRNA to assemble amino acids in the correct order to form a protein.
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