Evolution and Natural Selection

Front

Evolution

Back

Change over time; change in the frequency of selected genes within a population of organisms.

Front

Natural Selection

Back

Theory proposed by Charles Darwin in 1859.

Front

Overproduction

Back

Too many offspring are created; not all can survive due to limited resources in the environment.

Front

Competition

Back

Species sharing common niches will compete for food, space, mates, etc.

Front

Variation

Back

Sexual reproduction creates new combinations of genes.

Front

Mutation

Back

Change in DNA/genes slightly.

Front

Selection and Reproduction

Back

Genes not adapted to the environment are selected against (die).

Front

Evolutionary Tree

Back

A diagram that illustrates the change of species over time.