Evolution is the change in the heritable characteristics of biological populations over successive generations. [1][2] It occurs when evolutionary processes such as genetic drift and natural selection …

Dec 2, 2025 · Evolution, theory in biology postulating that the various types of living things on Earth have their origin in other preexisting types and that the distinguishable differences are due to modifications …

Evolution helps us to understand the living world around us, as well as its history. Biological evolution is not simply a matter of change over time.

Darwin and a scientific contemporary of his, Alfred Russel Wallace, proposed that evolution occurs because of a phenomenon called natural selection. In the theory of natural selection, organisms …

Evolution is a process of continuous branching and diversification from common trunks. This pattern of irreversible separation gives life's history its basic directionality.

Apr 5, 2025 · In the world of science, few ideas have had as profound an impact on human understanding as Charles Darwin’s theory of evolution by natural selection. In the years since …

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, …