Question: Is a gene a triplet of consecutive DNA nucleotides?

Tristan Smith answered on 9 Mar 2015:

A gene is region of coding DNA, like a recipe. It contains regions of DNA that tell the machinery to start reading the gene, the message, a long run of DNA sequence and then a region to tell it to stop. If the gene is a protein-coding gene, then that DNA message it translated into an amino acid sequence, this is where triplets of DNA are important. The ribosomes in the cytoplasm read the DNA and turn it into a chain of amino acids that get folded into a protein. The ribosome needs a start, ATG, which starts the protein with a methionine, it then continues to read every three bases (triplet), adding a new amino acid, until it finds a stop, TGA for example.