Mendel was not the first to propose genetics however, he was the first to figure out that genes (he called them elements) came in pairs and that one member of each pair came from each parent. As a result of his realization regarding pairs of genes, Mendel determined what are called Mendel's laws of inheritance..
Chickens usually don't simply stop laying eggs when they get to a certain age, but they will lay fewer as they get older.That said, most laying breeds will lay more or less productively in backyard terms for five or seven years.hickens usually don't simply stop laying eggs when they get to a certain age, but they will lay fewer as they get older.
On average, it takes 21 days for a fertilized chicken egg to hatch into a healthy chick. It takes about 21 days for a chick to hatch, give or take a few. If you are trying to hatch your own chicks, you will need to familiarize yourself with the basics of egg care or you could put the health of your chicks at risk. Egg Formation Chickens lay an average of one egg every 25 to 26 hours.