Answer:
AUG (Methionine)
Step-by-step explanation:
The process of protein synthesis occurs in two stages; transcription and translation. Transcription produces mRNA molecules from a DNA template. The mRNA's sequence is then read in a group of three nucleotides called CODON in the ribosome during the translation process.
Each Codon, of which there are possible 64, specifies an amino acid (building blocks of protein). Translation in the ribosome occurs when the ribosomal subunit binds to an mRNA molecule and a transfer RNA also binds using its anticodon (complementary to mRNA codon) to the AUG codon on the mRNA.
This AUG codon is regarded as the START CODON because it is the codon that initiates the commencement of translation. It encodes Methionine.