Natural Selection In Charles Darwin's Theory Of Evolution

Evolution can be defined by descent with modification from a common ancestor. This means that all organisms that inhabit Earth share a common ancestor, this includes you, me, tomato, tiger, etc.…That common ancestor produced descendants, and those descendants produced their own descendants and modification takes place for each generation of descendant eventually leading to the wide variety of Earth’s lifeforms we have today. Common descent with modification occurs due to mechanisms of evolutionary change. A mechanism of evolutionary change requires for the process to affect the allele, gene variant, frequency. Natural selection is one of these mechanisms. The process of natural selection comes down to variation, differential reproduction, and heredity. In other words, natural selection occurs when there is a variation in traits and one of those traits makes it more likely for individuals with that trait to survive and reproduce, allowing them to pass down that trait to a new generation. Natural selection could be an explanation as to how the frequency of beetles with spots decreased over a few generations. The decrease in frequency of spotted beetles spanning the generations, in the context of natural selection, could be due to the predators of the beetle population targeting the spotted beetles more often …show more content…
Though this concept of an evolutionary descent has been around since the ancient Greeks, Charles Darwin introduced a plausible mechanism for evolution known as natural selection. Darwin’s Theory of Natural Selection was sparked upon his visit to the Galapagos Islands. Darwin observed unique creatures that were similar from island to island but were perfectly adapted to their environments. This observation lead him to consider the origins of the island’s inhabitants which later on became the foundation of his Theory of Natural