How Evolution Work In Real World Populations

The results of this study relate to the larger issue of how the forces of evolution work in real world populations since mutation, genetic drift, gene flow and natural selection are within species all around us. One population that experiences these four forces of evolution is a population of bears. When it comes to mutation, if a population of bears only had dark-colored bears, but then all of sudden a light bear appeared in the population this would mean that one of the alleles that determine fur color got mutated and ended up in one bear.
Finally natural selection is seen in real would populations also because if we had a population of bears that were big, small, light and dark. In an arctic environment the bears that would be favored by natural selection would be the bears that are brighter and larger. This would happen because smaller bears would die because it’s harder to stay warmer when you’re small and if you’re darker you can’t hunt as effectively. The lighter and bigger bears have more ability to stay warm and have more ability to hunt effectively. These variations would lead them to have a higher fitness.
Natural selection favored brown bunny alleles due to its ability to survive and reproduce. The four forces of evolution also impact human evolution. An example is a natural selection affecting Malaria. People with the Malaria gene tend to have one sickle cell allele and a normal cell allele. Since they have two different alleles they better adapt to live in Malaria zones than people with normal blood or sickle cell genes. Therefore, people who carry the Malaria allele are favored by natural selection in Malaria zones, will survive and