AP BIOLOGY

Detailed explanation-1: -Pollen with the genes for a desired trait is transferred from plants of one crop variety to the flowers of another variety with other desirable traits. Eventually, through careful selection of offspring, the desired trait will appear in a new variety of plants.

Detailed explanation-2: -How does selective breeding work? Farmers select parents with desirable characteristics and breed them together. From their offspring, they again choose those with the best combination of traits and breed them together. The process is repeated over many generations .

Detailed explanation-3: -Main steps involved Choose parents that show these characteristics from a mixed population. They are bred together. Choose the best offspring with the desired characteristics to produce the next generation. Repeat the process continuously over many generations, until all offspring show the desired characteristics.

Detailed explanation-4: -Answer. Selective breeding of crops has been a tool of agriculture for thousands of years. Simply trying to breed plants to combine desired traits was and still is an important part of bringing about crops that yield more, stand better, or resist pests and disease more effectively.

Detailed explanation-5: -Artificial selection has long been used in agriculture to produce animals and crops with desirable traits. The meats sold today are the result of the selective breeding of chickens, cattle, sheep, and pigs. Many fruits and vegetables have been improved or even created through artificial selection.