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.
After 24 to 32 weeks of growing up, your hens will lay an egg almost every day for eight or nine months straight, then take a break for a few weeks to a few months (typically in the winter), and then start laying again. Each time they start laying again, they will lay fewer, but larger, eggs. It is not unusual for a pet hen to lay for five yearsâat which point she may be laying only a couple of eggs a week on averageâand to live even longer.