Answer:
A. There would be no change; GUU always codes for "valine"
Step-by-step explanation:
Genetic codes are "universal" in nature which means that a particular genetic code specifies same amino acid in all type of organisms. If the RNA molecule in a human has the nucleotide sequence of GUU, this would indicate that the amino acid valine would be needed to make the protein. The genetic code "GUU" code for "valine" in mushrooms also.