AP BIOLOGY

Detailed explanation-1: -Humans have selectively bred plants and animals for thousands of years including: crop plants with better yields. ornamental plants with particular flower shapes and colours. farm animals that produce more, better quality meat or wool.

Detailed explanation-2: -Selective breeding is evolution by human selection. As nineteenth-century British naturalist Charles Darwin noted in Variation of Animals and Plants under Domestication, selective breeding may be methodical or unconscious.

Detailed explanation-3: -Selective breeding leads to future generations of selectively bred plants and animals, all sharing very similar alleles which will reduce variation. Genes and their different alleles within a population are known as its gene pool .

Detailed explanation-4: -Selective breeding was established as a scientific practice by Robert Bakewell during the British Agricultural Revolution in the 18th century. Arguably, his most important breeding program was with sheep. Using native stock, he was able to quickly select for large, yet fine-boned sheep, with long, lustrous wool.