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Charles Darwin’s theory of natural selection is a mechanism that proposes that evolution is a natural selection. Since the resources available are limited according to nature, creatures that have genetic characters that favor their survival and reproduction will tend to leave a large number of offspring compared to their peers. This results in traits increase in regularity over several generations (Richards, 2016).
According to the evolution theory of Charles Darwin by natural selection, beings and creatures possess inherited traits. These characters make them adapt and adjust to their surroundings more quickly than when related to other fellows of the same species because they will most probably survive. Therefore, these species will be able to replicate, and they will pass a lot of their genes on to the generation, which will be following. For instance, an ecosystem with giraffes and antelopes experiences stiff competition of food because they all rely on twigs. The two species will struggle for food, and the giraffe will be able to survive because, with its long neck, it will be able to eat twigs from tall trees that antelopes can’t reach. This is how the giraffe species exists while the antelopes diminish through starvation. The two species had to solve their feeding reliance, whereby giraffe could feed only from long trees that the antelopes could not reach, leaving the short one for the antelope, which can bring change by favoring both species their existence.
Drug addiction can be explained well through genetics. In this case, the environment which Susie grew up in played the role of her to become a drug addict. Also, she might have inherited the trait from her parent (Chabris et al., 2015). Through their stimulus on physiology and morphology, genes build a framework by which behaviors of an individual are shaped by the environment and as an outcome of the animal’s internal working and shape.
Reference
Chabris, C. F., Lee, J. J., Cesarini, D., Benjamin, D. J., & Laibson, D. I. (2015). The fourth law of behavior genetics. Current directions in psychological science, 24(4), 304-312.
Richards, R. J. (2016). Darwin’s theory of natural selection and its moral purpose. Debates in Nineteenth-Century European Philosophy: Essential Readings and Contemporary Responses, 211-225.