The change in the characteristics of a population over several generations

A group of genetically similar organisms that can reproduce naturally with one another and create fertile offspring.

The process where organisms better adapted to their environment tend to survive and produce more offspring.

Survival and reproduction of individuals due to differences in phenotypes that make them better adapted to the environment.

Differences in a certain trait between individual organisms of a species.

A group of organisms of the same species living in the same area.

The process in which new species is formed.

Any change in the specific order of nitrogen bases in DNA.

A characteristic that is passed from parents to offspring.

Individuals with a certain trait are more successful at reproducing than others.

A diagram that shows evolutionary relationships among a group of organisms.

The science of determining the relative order of past events and estimates of time based on the position within rock layers, without necessarily determining their absolute age.

Radioactive dating is a technique used to calculate an age in years for geologic materials (rocks and fossils) by measuring the presence of a short-life radioactive element.

The relative frequency of an allele (variation of a gene) in a particular population.

The gene pool is the genetic diversity that exists within a population.

British naturalist who proposed the theory of biological evolution by natural selection.

The external agents which affect an organism's ability to survive in a given environment.

A group of genetically similar organisms that can reproduce naturally with one another and create fertile offspring.

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