[ActivationEnergy]

Which came first?
the egg.
My reasoning?
other animals laid eggs before chickens...

[fledarmus]

The mutation which produced the chicken from its evolutionary pro-chicken ancestor must have been present in the germ cells of the ancestor. Therefore, the prototypical chicken hatched from an egg containing a mutation derived from its evolutionary ancestor. The egg was a chicken egg before there was a chicken. The egg came first.

[ActivationEnergy]

Glad someone gets my explanation.

[juanrga]

I could say that "the mutation which produced the egg from its evolutionary pro-egg ancestor must have been present in the germ cells of the ancestor. Therefore, the prototypical egg hatched from an chicken containing a mutation derived from its evolutionary ancestor. The egg becomes from a chicken before there was an egg. The chicken came first." but, now seriously, I think that the response to this ancient dilemma is: none

[Jorriss]

but, now seriously, I think that the response to this ancient dilemma is: none

This. I think if you actually use biology and what not to explain what came first, an actual chicken or egg, then the point of the question is lost.

[edwards.kevin41]

Do we really care if it’s a chicken or an egg?