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.
With optimum conditions such as temperature and humidity a chicken egg takes 21 days to hatch.    From when it was layed, about 20-28 days,depending on the breed. From th â¦ e time when the egg first cracked, about one day. This is a very slow process.fter the nest is complete, the female lays a batch of four eggs. They are the same shape as a chicken's egg but much smaller. The eggs are light beige and spotted with brown or black. The female arranges the eggs in a circle.