Micro evolution is simply a change in gene frequency within a population. Evolution at this scale can be observed over short periods of time, for example, between one generation and the next, the frequency of a gene for pesticide resistance in a population of crop pests increases. Such a change might come about because natural selection favored the gene, because the population received new immigrants carrying the gene, because some non-resistant genes mutated to the resistant version, or because of random genetic drift from one generation to the next.
Gene Pool Changes
Natural Selection: The animals with the best fit traits that help them survive pass on genes to their next generation
Mutations: Mutations can occur when there is a change in an organisms DNA. These changes will then be passed down to future generations when mating happens. Mutations in a species can be Good, Bad, or have a Neutral effect
Genetic Drift: When there is a change in the gene pool due to random events happening
Gene Flow: When genes are transferred from one population, these can cause variations in the DNA like color changes and new selective traits
Non-Random Mating: Organisms that do not usually mate a bred together can for a cross breed animal. This would not happen naturally because two of those offspring would not be able to have children.
Mutations: Mutations can occur when there is a change in an organisms DNA. These changes will then be passed down to future generations when mating happens. Mutations in a species can be Good, Bad, or have a Neutral effect
Genetic Drift: When there is a change in the gene pool due to random events happening
Gene Flow: When genes are transferred from one population, these can cause variations in the DNA like color changes and new selective traits
Non-Random Mating: Organisms that do not usually mate a bred together can for a cross breed animal. This would not happen naturally because two of those offspring would not be able to have children.