1. | More individuals are produced each generation than can survive. |
2. | Phenotypic variation exists among individuals and the variation is heritable. |
3. | Those individuals with heritable traits better suited to the environment will survive. |
4. | The evolutionarily significant variations in the population arise due to mutations. |
1. | The survival and reproduction of organisms depend on inherited traits that suit their environment. |
2. | Populations exhibit variation in traits, and individuals with advantageous traits reproduce more. |
3. | Fitness, in Darwin’s sense, refers to the reproductive success of organisms in a given environment. |
4. | Natural selection leads to the creation of new traits that are better adapted to changing environments. |