4 Principles of Natural Selection & exAmples


Any difference between cells or groups of organisms of any type of species caused by genetic differences. Some examples of variation would be: height, able to roll tongue, hair color, eye color, or attached/unattached earlobes.


Ratio of variation due to differences between genotypes to the phenotype variation for a character or trait.


Lead to adaptations and variations in species.

Reproductive Advantage

Organisms pass on different traits from on another.

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