Atavism is an apparent "throwback" characteristic of an organism that reveals a trait of an earlier ancestor. Examples of atavism include hind legs on whales, teech in chickens, and color blindness in humans.
Of these animals, the Freshwater Oyster has the longest recorded life span at 80 years. The longest recorded life span for a termite is 50 years; for a chimapanzee, 50 years; and for an Indian elephant, 70 years.
10) What was the first genetically engineered organism?