Turmeric is a spice that contains Curcumin, a chemical compound that has been found to have anti cancer properties. For centuries, turmeric has been used as an antibiotic in India to provide relief in wounds and cuts.
Lesson Summary. In summary, directional selection is a type of natural selection in which individuals with a trait at one end of a phenotypic spectrum are most fit. Disruptive selection is a type of natural selection in which individuals at either end of a phenotypic spectrum are most fit.Stabilizing selection is a type of selection in which individuals in the middle of a phenotypic spectrum are most fit.esson Summary. In summary, directional selection is a type of natural selection in which individuals with a trait at one end of a phenotypic spectrum are most fit. Disruptive selection is a type of natural selection in which individuals at either end of a phenotypic spectrum are most fit.
New varieties. Natural selection and selective breeding can both cause changes in animals and plants. The difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. For this reason selective breeding is sometimes called artificial selection. Different varieties of plants and animals with desired characteristics can be developed by selective breeding. For example: 1  cows that produce lots of milk. 2  chickens that produce large eggs.