Corn’s wild ancestor doesn’t contain any poisons, but it isn’t very pleasant to eat. Teosinte is a small grassy plant native to Mexico, with small, hard seeds that easily disperse from a tiny cob. Over thousands of years, farmers in North America selectively bred teosinte to have a single tall stalk and large ears with soft kernels that stay on the cob, ready for us to eat. Unfortunately, this fixation on uniform corn has led to steep declines in the crop's genetic diversity , which may spell trouble for farms facing challenges due to pests and climate shifts.
The difference between humans and other animals is that, unlike any other animal (as far as we know), we can and do consciously respond or alter our response to a stimulus. The greatest example lies in the existence of amusement parks, where people deliberately subject themselves to stimuli that any other creature on earth would go to great lengths to avoid. Imagine, if you can, the reaction of a dog to a roller coaster. If it didn't leap out at the first movement, it would cringe in bottom of the car until it probably had a heart attack. Yet, humans go on such rides for fun, our minds accepting that the ride is safe, and thus control the terror such a thing would cause in any other creature.
15. Economic Concerns
Bringing a genetically modified food to market can be a costly and lengthy process, and of course, agricultural bio-technology companies want to ensure a profitable ROI. So, many new plant genetic engineering technologies and products have been patented, and patent infringement is a big concern within the agribusiness. Also, consumer advocates are worried that this will raise seed prices to very high levels that third-world countries and small farmers cannot afford them, thus widening the gap between the rich and the poor.