Evolution of locomotives. Apr 13, 2025 · But evolution is more than just biology’s guiding principle; it’s a story about time, change, and survival. The scientific theory of evolution by natural selection was conceived independently by two British naturalists, Charles Darwin and Alfred Russel Wallace, in the mid-19th century as an explanation for why organisms are adapted to their physical and biological environments. Evolution helps us to understand the living world around us, as well as its history. In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. What is evolution and how does it work? Evolution 101 provides the nuts-and-bolts on the patterns and mechanisms of evolution. The theory of evolution is based on the idea that all species are related and gradually change over time. In the theory of natural selection, organisms produce more offspring than are able to survive in their environment. Such evolutionary changes result from mutations that produce genomic variation, giving rise to individuals whose biological functions or physical traits are altered. Evolution is a process of continuous branching and diversification from common trunks. The scientific theory of evolution by natural selection was conceived independently by two British naturalists, Charles Darwin and Alfred Russel Wallace, in the mid-19th century as an explanation for why organisms are adapted to their physical and biological environments. . This pattern of irreversible separation gives life's history its basic directionality. With the beginnings of modern biological taxonomy in the late 17th century, two opposed ideas influenced Western biological thinking: essentialism, the belief that every species has essential characteristics that are unalterable, a concept 3 days ago · Evolution, as related to genomics, refers to the process by which living organisms change over time through changes in the genome. Oct 25, 2025 · evolution, theory in biology postulating that the various types of plants, animals, and other living things on Earth have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations. Oct 25, 2025 · Biological evolution is the process of change and diversification of living things over time, and it affects all aspects of their lives— morphology (form and structure), physiology, behaviour, and ecology. Although the idea that life evolves wasn’t entirely new in the 19th century, it was Charles Darwin who transformed it into a scientific theory. Biological evolution is not simply a matter of change over time. 3 days ago · Evolution, as related to genomics, refers to the process by which living organisms change over time through changes in the genome. You can explore the following sections: The scientific theory of evolution by natural selection was conceived independently by two British naturalists, Charles Darwin and Alfred Russel Wallace, in the mid-19th century as an explanation for why organisms are adapted to their physical and biological environments. Evolution is the principal scientific theory that biologists use to understand life and is used in many disciplines, including medicine, psychology, conservation biology, anthropology, forensics, agriculture and other social-cultural applications. Evolutionary thought, the recognition that species change over time and the perceived understanding of how such processes work, has roots in antiquity. Oct 19, 2023 · Darwin and a scientific contemporary of his, Alfred Russel Wallace, proposed that evolution occurs because of a phenomenon called natural selection. 4hjiq9wwybmjuyscqhlymxz6idyv41inpbwfcp0d