Biotech foods are produced from animals and plant that been genetically altered. Genetic alteration is nothing new. Humans have been altering the genetic taits of plants for thousands of years by keeping them in following years,and by breeding varieties to make them taste sweeter, grow bigger, or last longer.In this way we've transformed the wild tomoto from a fruit the size of a small stone to the giant ones we have today.From a plant called teosinte with an "ear" barely an inch long has come our foot-long cars of sweet white and yellow corn.