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: There is [[variation]] within a [[species]], [[organism]]s of the same [[species]] don't look exactly the same as each other.
: [[Variation]] can be [[Continuous Variation|continuous]] or it can be [[Discontinuous Variation|discontinuous]].
: [[Variation]] within a [[species]] is the result of both [[genetic]] and environmental factors.
: The greater the [[genetic]] [[variation]] within a [[species]] the more likely a [[species]] will survive changes in the environment. Individuals may die, but with enough [[variation]] some of them will be better [[Adaptation|adapted]] to the change in their environment.
===Genetic Variation===
: Most of the [[variation]] between different [[species]] can be accounted for by the [[DNA]] differences between those [[species]].
: The [[Variationvariation]] within a [[species]] is the result of both due to [[geneticmutation]] and environmental factors.The greater the s causing different [[geneticphenotype]] s. These [[variation]] within a s caused by [[speciesmutation|genetic mutations]] are the more likely a [[species]] will survive changes in the environment. Individuals may die, but with enough [[variation]] some source of them will be better [[AdaptationEvolution by Natural Selection|adaptedevolution]] to the change in their environment.