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 …

The definition Biological evolution, simply put, is descent with inherited modification. This definition encompasses everything from small-scale evolution (for example, changes in the …

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 …

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

Oct 19, 2023 · 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 …

Apr 13, 2025 · But evolution is more than just biology’s guiding principle; it’s a story about time, change, and survival. Although the idea that life evolves wasn’t entirely new in the 19th …

2 days ago · Studying the science of evolution can completely transform our understanding of the subject of history. Evolution is, in a way, the history of all living organisms on Earth.

Evolutionary thought, the recognition that species change over time and the perceived understanding of how such processes work, has roots in antiquity. With the beginnings of …

What is evolution and how does it work? Evolution 101 provides the nuts-and-bolts on the patterns and mechanisms of evolution. You can explore the following sections:

In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection.