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-.