Another example is bed bugs. Bed bugs have evolved resistance to the most commonly used chemicals. The poison used to kill them work by attacking the nervous system. The more the pesticide is used, it can create unwanted changes in the gene pool that leads a form of artificial selection called pesticide resistance. This is considered a mutation and these mutations emerge randomly and are favored when a population of organisms winds up in an environment in which the mutations happen to be helpful. In that situation, if some) of the insects carry the resistance mutations, those insects will be better able to survive and reproduce and will wind up passing the mutation on to their offspring. As this goes on through generations, the population can evolve so that every bedbug carries the resistance mutations, an outcome which is great for the bugs but frustrating for people trying to get rid of them. Hundreds if not thousands of species have gone through small changes within a population. This is also known as microevolution. There are some bedbugs that have evolved resistance genes that are most active in their outer shell, fighting off pesticides. Biologists have figured out what mutations are responsible for
Another example is bed bugs. Bed bugs have evolved resistance to the most commonly used chemicals. The poison used to kill them work by attacking the nervous system. The more the pesticide is used, it can create unwanted changes in the gene pool that leads a form of artificial selection called pesticide resistance. This is considered a mutation and these mutations emerge randomly and are favored when a population of organisms winds up in an environment in which the mutations happen to be helpful. In that situation, if some) of the insects carry the resistance mutations, those insects will be better able to survive and reproduce and will wind up passing the mutation on to their offspring. As this goes on through generations, the population can evolve so that every bedbug carries the resistance mutations, an outcome which is great for the bugs but frustrating for people trying to get rid of them. Hundreds if not thousands of species have gone through small changes within a population. This is also known as microevolution. There are some bedbugs that have evolved resistance genes that are most active in their outer shell, fighting off pesticides. Biologists have figured out what mutations are responsible for