1. Inheritance: the passing of traits from parents to offspring2. Overproduction: more offspring that can be supported by the environment; causes the organisms to compete for limited resources3. Survival of the fittest: the idea that only the strongest organisms survive to reproduce4. Differential reproduction: the idea that an organism well adapted to its environment will live to reproduce and have their own offspring
Survival of the fittest
There are more light brown owls than dark brown owls. The lighter owls are smaller than the darker owls. The ratio of Dark to Light would be 1:3.
Trait(s): Size (bigger) and color, (dark brown)Trait selected against: Size (smaller) and color, (light brown)Type of adaptation: PhysicalEnvironment/Environmental change: Predator and limited space
With the amount of owls in the area food is limited. With more owls there are more predators as well.
The lighter colored owls were smaller and had more vulnerabilities to the predators. The dark owls survived due to being larger and fitting into their environment.
The lighter owls died off due to smaller size and their color.