The Four Methods Of Evolution: Evolution, And Natural Selection

1316 Words 6 Pages
One of the most heavily debated topics of all time is evolution. However, if evolution were not at work then there would be a loss as to one of the ways that we understand how we all came to be. “Evolution is the change in allele frequencies of a population, which over time produces a population with new or modified characteristics. (Evolution: The Big Picture)” Evolution can be achieved through four different methods: mutation, genetic drift, migration, and natural selection. Out of the four methods, natural selection is most important. Charles Darwin describes natural selection in his book “The Origin of Species”.
For natural selection to occur, there are three requirements that must be met for the desired outcome to be achieved. “The first condition necessary for evolution by natural selection is the presence of variation for a trait. A population must have individuals with different versions of a trait—for example, the different coat colors in mice, which are represented here by different colors on chromosomes. Second, the different versions of a trait must be heritable, meaning that the traits may be passed from parents to offspring. The third and final condition is that the different versions of a trait must result in differences in reproductive success for the individuals in the population.
…show more content…
The results are that will develop a habit of eating nonhealthy substances based off our behavior towards food. What exactly is a behavior you might ask? “A behavior encompasses any and all of the actions performed by an organism, often in response to its environment or the actions of another organism. Feeding behavior is only one of many behaviors influenced by natural selection. Behavior is as much a part of an organism 's phenotype as is an anatomical structure, and as such it can be produced and shaped by natural selection. (Animal Behavior: The Big

Related Documents