NEET BIOLOGY

Detailed explanation-1: -About 10, 000 years BC, people harvested their food from the natural biological diversity that surrounded them, and eventually domesticated crops and animals.

Detailed explanation-2: -Selective breeding began about 10, 000 years ago, after the end of the last Ice Age. Hunter-gatherers began to keep flocks and herds and to cultivate cereals and other plants.

Detailed explanation-3: -Circa 8000 BCE: Humans use traditional modification methods like selective breeding and cross-breeding to breed plants and animals with more desirable traits.

Detailed explanation-4: -We can take advantage of this to selectively breed animals or plants, choosing parents with particular characteristics to produce offspring that have those characteristics. For example, if we breed tall parents together and exclude shorter parents, the offspring should inherit “tall” gene variants that make them tall.

Detailed explanation-5: -Early plant breeding The practice is estimated to date back 9, 000-11, 000 years. Many crops in present-day cultivation are the result of domestication in ancient times, about 5, 000 years ago in the Old World and 3, 000 years ago in the New World.