Answer:
The mutation that occurred is a substitution mutation, where the seventh nucleotide (cytosine, C) in the original RNA sequence (CGG) has been replaced with uracil (U), resulting in the new RNA sequence (UGG). This mutation changes the codon from CGG (which codes for the amino acid arginine) to UGG (which codes for the amino acid tryptophan). Therefore, the mutation is a missense mutation, where a single nucleotide change results in a different amino acid being incorporated into the protein.
EXPLANATION :
- Note: AUG is the start codon, which codes for the amino acid methionine. CCU codes for proline, UAC codes for tyrosine, GGU codes for glycine, and UGG codes for tryptophan.