Microevolution Mechanisms

A type of genetic drift in which small groups of organisms separate from a larger population and form new small colonies.

• Gene Flow

• Founder Effect

• Natural Selection

• Artificial Selection

The exchange of genes between two populations.

• Genetic Drift

• Founder Effect

• Gene Flow

• Genetic Recombination

This term refers to the total genetic information found in a population; the complete collection of all the alleles found in a population

• Gene library

• Genome

• Gene pool

• Allele pool

This is one of the mechanisms of evolution; it occurs when individuals move into or out of a population

• Gene flow

• Mutation

• Natural selection

• Genetic Drift

This occurs when a large population is drastically reduced by an event such as a natural disaster; the population's new gene pool only contains alleles from the survivors

• Founder effect

• Bottleneck effect

• Meteor effect

• Natural selection

This is the process that ultimately creates new variations and changes in DNA; leads to the creation of new alleles

• Mutation

• Gene flow

• Natural selection

• Genetic drift

Mutations are important because they bring about

• death of the organism in which they develop
• genetic variation needed for a population to evolve
• benefits for the individual, not for the population
• Hardey-Weinberg equilibrium within a population

Survival of the fittest or when favorable adaptations reproduce faster is called what?

• Evolution
• Adaptation
• Natural selection
• Fossilization

What does the picture represent?

• Founder Effect
• Mutations
• Bottleneck effect
• Gene Flow

What mechanism of evolution occurs when allele frequencies change over generations due to random chance?

• Genetic Drift

• Mutation

• Natural Selection

• Gene Flow