The type of mutation that results in the formation of a protein with one incorrect amino acid is called missense mutations. It is a mutation where a single nucleotide changes the results in a codon that codes for a different amino acid.
Missense mutations are the ones that occur when the change in the nucleotide sequence of the DNA leads to a different amino acid in a protein because the codon wasn't what it was supposed to be.
<u>The change in one amino acid can make a </u><u>big difference</u><u> in a protein</u>, making it lose its function or making it function abnormally -most probably in a way that can be harmful to the cell and the body-.
Because you body is introduced to the virus, it is familiar to it and can build up an immunity to the weakened form so when the actual virus invades, your body know what to do.
