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.
The typical interval between eggs laid is about 25 hours, so a hen that lays an egg every day will lay a bit later each day..This is slightly less than one a day, and work out to about 350 a year.he typical interval between eggs laid is about 25 hours, so a hen that lays an egg every day will lay a bit later each day..