Question

which comes first egg or hen​

Answer 1

Answer:

Eggs certainly came before chickens, but chicken eggs did not—you can't have one without the other. However, if we absolutely had to pick a side, based on the evolutionary evidence, we're on Team Egg.

Answer 2

Answer:

the egg comes first—when you narrow it down to chickens and the specific eggs from which they emerge. At some point, some almost-chicken creature produced an egg containing a bird whose genetic makeup, due to some small mutation, was fully chicken.