Bio Selection

define natural selection

a process in which organisms with desirable genes/alleles are “selected” or “favored” to pass on their genetics to offspring

define evolution

The gradual change in the inheritable characteristics of a population over generations

what are some selection pressures

competition for limited resources, predation, environmental factors, habitat loss

what are the steps in describing a natural selection

1. Describe the pre-existing variation in a population

2. Describe the selection pressure

3. “Individuals with (the selected variation) survive and reproduce, thereby passing on (the allele) to their offspring”

4. Describe the change that occurs after many generations

define artificial selection

selective breeding to produce animals with desirable traits by humans

Describe the process of artificial selection

1. Choose parents with the selected variation to produce offspring

2. Offspring with selected variation are kept

3. These offspring are selected as parents for the breeding of the next generation