4 Mechanisms Of Evolution
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- Mutation when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.
- Migration Movement from one population of something to another. (Gene Flow)
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- Genetic Drift (Allelic Drift) Is the change in the frequency of a gene variant (Allele) in a population due to random sampling of organisms.
- Competition for resources from the same species and others.
- Natural Selection When a more advantageous trait allows an organism to survive.
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