Which Came First: the Chicken or the Egg?
Short Answer: The Egg
Explanation: The egg laying animals existed way far before the chicken came. So technically, the egg came before the chicken.
Let’s take the clock many, many moons ago when there were no chickens. A creature very similar to chicken (let’s call it proto-chicken) would have mated with other proto-chicken. The two organisms pass their genes in the form of DNA. However, the replication of DNA is never 100% accurate and very often produces a tiny change for the new organism. These tiny changes in DNA could create a new species over thousands of generations. The same happened with proto-chickens and the small genetic mutation created the new species called chicken, which grew in egg.
oman scholar Plutarch made the earliest written reference to this problem, but it’s clear from his treatise “On Whether the Hen or the Egg Came First” that he wasn’t the first to ask it. In his circle, it wasn’t just about poultry. The seemingly endless cycle of chickens and eggs, to them, suggested that the world had always been exactly the same as it was, with no discrete beginning or ending. But if they’d understood that species of animals change over time, they might not have been so worried about it.
Because we know that the world hasn’t always been the way it is today, that evolution is real, and that there was a time before both chickens and eggs, we know that there really is an answer to the question. This argument is over easy: It’s the egg.
Eggs have been around since fish evolved, long before birds in general and chickens specifically. Eventually, a bird that was very much like a chicken laid an egg, and a chicken hatched out of it. There might be some quibbling over exactly where in the evolutionary line is the division between “chicken” and “not-chicken,” but no matter how you slice it, the egg was there ahead of time.