What chicken (hen) lays the biggest and most eggs per year?

White Leghorns

Explanation:

The hen who lays the biggest and most per year are the White Leghorns. They often lay to 250-280.

I believe it is a white Leghorns.

But im nott sure.

essentially, one bacterial cell splits into two daugurer cells. bacterial offspring don't need or get care from their parents because they are in a sense their own parents. that said, some bacteria can and do depend on other bacteria especially in harsh environments such as bacterial microfilms in hot water tanks.