From a biological standpoint, chickens are descendants of earlier bird species through a process of gradual evolution. Over countless generations, genetic mutations and changes accumulated in bird populations, eventually leading to the emergence of what we now recognize as chickens. This process occurred over a long span of time.
Taking this perspective, it can be argued that the first chicken would have hatched from an egg laid by a bird that was not quite a chicken but was very similar genetically. This would imply that the egg (containing the genetic mutation that resulted in a chicken) came before the bird we now consider a chicken.
In essence, the genetic changes that occurred within a bird's lineage led to the development of a chicken, and this change was manifested in an egg. Therefore, according to the principles of evolution and genetics, it seems that the egg came before the chicken.
Well, all I remember is that I was reading a Manhwa, and next thing I knew, I found myself here. Now that I'm here, I will try to cause as much chaos as possible. ^-^