BIOL 122 Lecture Notes - Lecture 10: Antibiotics, Lake Tanganyika, Gamete
Document Summary
Affected by both random processes and selection. Humans decide which individuals breed with a preconceived goal for the traits in the populations. Varieties of dogs all descended from gray wolves. All can potentially interbreed because they are still. Human practices can also lead to unintentional selection, often with all the same species negative consequences. May promote features that are not prominent in natural populations. Favors any trait that provides higher fitness to an individual. Diversification of life on earth is a result of natural selection. Occurs because of differences in reproductive success and survivability among individuals with different form/function in a particular environment. Generally, the effects of evolution by natural selection are seen in reproductive success or predator/prey outcomes. Moths demonstrate allelic frequency shift due to a change in environmental conditions (so2) Selection is plastic and can change as the environment changes industrial melanism: increase in pollution darkens roosting areas.
