Suppose there is a gene called vid that codes for the incredible ability to play any video game. this gene is 360 nucleotides long, with no introns. the wildtype version codes for a protein consisting of 120 amino acids. some people cannot play video games well at all. their vid gene was isolated and sequenced and found to have a nonsense mutation. the resulting non-functional vid protein consisted of just 20 amino acids. however, some rare individuals who also carry this same nonsense mutation in their gene do have a functional vid protein consisting of the full 120 wildtype amino acids. which of the following most likely accounts for these rare individuals with a mutation in their gene but a fully functional protein.