This was indeed a great explanation for this legendary question: which comes first- chicken or egg?
According to me, umm... Whatever you'll order first in a restaurant will come first. :D
Haha... :D
Now, I would like to be serious and answer this question.. do we ask who came first- boy or a girl? Do we ask- whether it was a cat or a dog which came first? Then, why are we even concerned. And even if we are, for some reason, obviously chicken came first because we know that egg hatching requires conditions which is warm and therefore chicken sits on the egg. So, the answer to this question is not in mitosis, but in evolution. Many chickens must have formed and died and then they must have evolved to form an egg in order to carry forward the generation. :)