Week 5 - Chicken or the Egg

I vote for the eggs, plural. This logic makes sense to me, an egg that hatches a chicken is a chicken egg whether it came from an actual chicken or not. This is the scary thing about implanting a Wooly mammoth egg into an elephant. Nature probably had hundreds if not thousands of years of trials to get that chicken egg to continually be a chicken. What are the implications of messing with mother natures time line?

I researched a bit about egg laying and the wide end comes first, the thin end gets "pinched off".