Evolution and Natural Selection

Front

The gradual change in the characteristics of species over long periods of time.

Back

Evolution

Front

A group of organisms with similar characteristics that can interbreed and produce fertile offspring.

Back

Species

Front

The process by which individuals with favourable traits are more likely to survive, reproduce, and pass on their traits to the next generation.

Back

Natural Selection

Front

Differences in traits among individuals of the same species.

Back

Variation

Front

A structural, behavioural, or physiological trait that improves an organism’s chances of survival and reproduction.

Back

Adaptation

Front

The idea that individuals best adapted to their environment are more likely to survive and reproduce.

Back

Survival of the Fittest

Front

The total collection of genes and alleles in a population.

Back

Gene Pool

Front

The relative proportion of a particular allele in a population.

Back

Allele Frequency

Front

A permanent change in the DNA of an organism, which can introduce new traits into the gene pool.

Back

Mutation

Front

A random change in allele frequency in a population, especially in small populations.

Back

Genetic Drift