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.
1 Itâs even longer when these chickens are exposed to a natural environment and without any aid of any artificial pellets to let them lay an egg earlier.  So in the overall average, chickens will start laying eggs between 5 and 8 months depending on the breed. Their eggs at first might be very small but after that it will be normal like all of the chicken eggs you can see in the market.