Biology natural selection

Evolution

is the gradual process by which species of organisms change over time through variations in traits and adaptation to their environments, driven by natural selection.

Gene

a small section of DNA that determines a charaterisic of traits

Allele

a difference amount characteristics of individuals in a population or a species.

mutation

a permanent change in the DNA sequence

Variation

Any difference among characteristics of individuals in a population or species

natural selection

organisms with an advantage for the environment are more likely to survive and reproduce

over reproduction

there are more individuals in the environment can support

selection pressure

factor that affects an organisms abilities to survive and or reproduce in a given environment

common selection pressures

availability of resources Predators disease climate/brother natural disasters

fitness

Measurement of the number of Offspring contributed to the Next Generation

adaptation

An advantage Street that provides survival and or reproductive benefits to the individual