Question

First come egg or hen

Answer 1

EgG came first and then a chicken got hatched from it.....

Answer 2

its egg which has come first
scientifically if we see then we will find that according to the cell theory all cells derive from pre-existing cells.
And an organism comprises of millions of cells,egg is a single cell
so a single cell has led to the birth of the hen which comprises of millions of cells.
A single cell multiplies or reproduces to form more cells or network of cells