Natural Selection

Natural Selection The Engine of Evolution Natural selection is a foundational principle of evolutionary biology , first articulated by Charles Darwin in the 19th century. It describes the process by which certain traits become more common in a population over time because they contribute to increased survival or reproductive success. In essence, natural selection acts as nature’s filter—organisms best adapted to their environment are more likely to thrive and pass on their genetic material to the next generation. The theory of natural selection revolutionized our understanding of life on Earth. It explains the diversity of species, the adaptations organisms develop in response to environmental challenges, and the origin of complex traits like camouflage, resistance to disease, and behaviors like migration. Importantly, natural selection works on existing genetic variation and does not create traits but favors those already present that offer a survival advantage. For biol...