0Jugglebug 11 years ago The answer: The egg. The explanation: The first "true" chicken was created through evolution when an egg combining genes from a male and a female was very slightly different from the others, and this "true" chicken went on to reproduce more "true" chickens. The details are not clear, but this probably occurred through selective breeding when humans began to select only those chickens that laid the most eggs to be allowed to reproduce and pass on their genes. The first chicken came from a slightly different egg laid during a selective breeding process. When the chicken hatched from its egg, it laid more eggs than any of the others that they'd bred, and so they were satisfied enough to stop selective breeding and allow all chickens from the eggs of the "first chicken" to reproduce.