Apparently it was the chicken that came first, not the egg.
Scientists have discovered that the egg can't be produced with a particular protein called ovocleidin (OC-17), and that's found in the ovaries of the chicken. OC-17 acts as a catalyst, kick-starting the conversion of calcium carbonate in the chicken's body into calcite crystals.
The particular news report this appeared in finished by saying: But the researchers have not yet got an answer to how the protein-producing chicken existed in the first place.
Oh, hang on, of course, we all come from a single cell that came from....wait! we haven't discovered that yet, even though we know it must be true because we've thrown out the idea of a Creator....therefore...hang on, something's missing from the calculation....
I know: God!