It's not just one gene, it's two. I toggle them back and forth all the time. A third one gives me gills. Seriously? Why wouldn't you make that leap? and why wo

It's not just one gene, it's two. I toggle them back and forth all the time. A third one gives me gills. Seriously? Why wouldn't you make that leap? and why would you assume they would presume to know what gene or if it was even one gene?