What came first, the Chicken or the Egg?

[AstusAleator]

Such a simple question with a simple answer.

There were egg-laying species around long before what we identify as a modern chicken existed. They weren't all birds either...

Therefore... the egg existed long before the chicken.

[Dustfinger]

Well, any egg for sure. But a chicken's egg didn't exist before the chicken existed ! Coz the species evolved out of quite a few cells at first before they became multicellular, and with this came the chicken and after that surely the egg.

[sunil124]

i think that all cell coming together and then it fused and hen is comes then reproduce and egg willl comeeeeeeeeeeeeeeeeeeee

[Cat]

Depends on how you define "chicken egg". Does is have to look like chicken egg does now, or is it a chicken egg if the chicken comes out of it, or did chicken had to lay it?
Anyways, I am for the egg: different breeds of chickens have different looking eggs, so however different the first egg to produce chicken looked like I would still call it chicken egg. And anyone that thinks that chicken came first, needs to clarify what is a "chicken", since I am sure 1st one did not look exactly like common variety of today.