Common Misconceptions to Watch Out For
- Populations do not change. Shifts in population can happen in many ways. Some changes can happen slowly and take hundreds of years, like the gradual shift in traits from genetic change. Some changes can happen more quickly, such as a shift in population because of environmental changes like pollution.
- Humans cannot control natural selection. Both plants and animals can be modified genetically by humans in a way that produces an organism with desired traits, but humans do not control natural selection. When humans modify a plant or animal genetically it is called artificial selection, and it is done for many reasons such as to create disease-resistance crops, bigger animals for food, and desired looks for specific dog breeds.
- Environmental factors cannot change traits. Environmental factors can affect traits in both plants and animals. For example, the sunlight can affect the color of your skin, and it can also affect your health. Too much Sun exposure can lead to skin damage, but not enough can lead to a vitamin D deficiency.