I am trying to understand Variations, adaptations and selective advantages and how they are all related. Feel free to add or correct me if I'm wrong- Variations are structural, functional, or physiological differences between individual's within a species that result from mutations. If the variation provides a selective advantage (genetic advantage) the organism's chances of survival in terms of both survival in a changing environment and reproduction increases. The variation is then considered an adaptation. So basically adaptations are variations which provide a genetic advantage and give some organisms within a species a better chance of survival than those without the adaptations. This survival advantage allows those organisms to reproduce and pass on their adaptation more frequently than those who do not possess these adaptations.
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