AP BIOLOGY

Detailed explanation-1: -Over time corn cobs became larger, with more rows of kernels, eventually taking on the form of the modern corn we eat today. Sowing ONLY the corn seeds with the “desired traits” is called “SELECTIVE BREEDING” or ARTIFICIAL SELECTION.

Detailed explanation-2: -Over thousands of years, selective breeding generated the broad diversity of corn varieties that are still grown around the world today. More maize is harvested each year than any other grain.

Detailed explanation-3: -For example, broccoli, cauliflower, and cabbage were all derived from the wild mustard plant through selective breeding. Artificial selection appeals to humans since it is faster than natural selection and allows humans to mold organisms to their needs.

Detailed explanation-4: -Selective breeding of corn was originally done by ancient farmers by choosing kernels with specific traits such as the ability to grow well in various climates, soil types and produced the largest number of kernels. A kernel is a seed that has resulted from a female egg fertilised by a male pollen grain.

Detailed explanation-5: -An example of artificial selection-Dog breeding Nowadays, these domesticated animals are what we call dogs! Domestication is the act of separating a small group of organisms (wolves, in this case) from the main population, and select for their desired traits through breeding.