Natural Selection

Evolution can occur on a small scale affecting a single population

• microevolution

• macroevolution

Evolution on a large scale affecting changes in species across populations

• microevolution

• macroevolution

The process of biological change in populations over time that makes descendants genetically different from their ancestors.

• evolution

• microevolution

• macroevolution

 Organisms with the “best” traits (adaptations) will live longer and reproduce more than others, causing changes in the population over time by acting on heritable traits.

• Natural Selection

• Artificial Selection

A feature that allows an organism to better survive in its environment

• adaptation

• variation

• overproduction

A random change in the frequency of alleles in a population over time.

• genetic drift

• gene pool

• jean pull

• Tokyo Drift

The combined alleles of all individuals in a population

• gene pool

• jean pull

• genetic equilibrium

• genetic imbalance

The movement of genes into/out of a population.

• gene flow

• genetic drift

When there are NO changes in the allele frequencies in a population over time.

• genetic equilibrium

• non-random mating

A measure of how well an organism can survive in its environment

• fitness

• adaptation