Now, if our mutation takes place on the third nucleotide, if the cytosine is changed into an adenine now, when we actually transcribe, the C becomes a g, the A becomes a u, the A becomes a u. The g. Becomes A-C-C becomes a G and G becomes a C. So this is the mRNA molecule that is used by the ribosome in translation. And when we translate, this will stay an arginine. But now this becomes a leucine because the UG codon codes not for a valid but for a leucine. So basically, anytime we have a point mutation that takes place on the coating region and which does change the amino acid that is produced, this type of point mutation is known as a miscense mutation. So a point mutation in which one nucleotide is substituted for another, and this causes a change from one amino acid to another.