Peyton Wilson's Evolution Blog

- Genetic Drift is random and is things like the Bottleneck and Founder's Effect while Natural Selection is not an example of Genetic Drift because it is not random. Examples of Genetic Drift in the form of Bottlenecks and Founders Effect above and example of Natural Selection below

 Phenotypic Plasticity is the ability of an organism to express a particular phenotype differently based on what is most needed in a certain environment without any change in the genome. In "The Genetic Basis of Adaptation following Plastic Changes in Coloration in a Novel Environment", they follow a species of lizards where some of the lizards lived in lava rock and had a darker color while some of the lizards lived in the sand and had a lighter color. This is from phenotypic plasticity allowing for better camouflage. This process is relatively fast and allows for better camouflage in different environments because of melanin production regulators.

  Stabilizing Selection: Individuals of a population that have the mean of a trait will have the highest fitness. Pos. Frequency-Dependent Selection: The higher the frequency of the allele, the higher the fitness of the individual. Neg. Frequency-Dependent Selection: The lower the frequency of the allele, the lower the fitness of the individual.