I know the history of the debate, still I think there is a answer. But to understand the answer, you would have to understand Darwinism and has to take it to be true.
Given that, the egg came first before the chicken.
Of course the next question would be, who laid that egg?
And the answer is, the ancestor of chicken.
Now to explain a bit: according to Darwinism all animals are created by change. However, most of the significant change occurs in the gene. The gene does not change once the baby is born. so, whatever is the first chicken it became an egg first.
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