Evolution | Definition, History, Types, & Examples | Britannica
2024年10月25日 · 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.
Evolution - Wikipedia
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
What is Darwin's Theory of Evolution? - Live Science
2022年10月14日 · In his book, Darwin describes how organisms evolve over generations through the inheritance of physical or behavioral traits, as National Geographic explains. The theory starts with the premise...
Theory Of Evolution: Definition, Charles Darwin, Evidence ...
2019年6月27日 · The theory of evolution by natural selection is attributed to 19th century British naturalist Charles Darwin. The theory is widely accepted based on fossil records, DNA sequencing, embryology, comparative anatomy and molecular biology.
Evolution - Natural Selection, Adaptation, Genetics | Britannica
2024年10月25日 · 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. Underlying these changes are changes in the hereditary materials.
Introduction to evolution - Wikipedia
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.
Darwinism | Definition & Facts | Britannica
2024年12月3日 · Darwinism, theory of the evolutionary mechanism propounded by Charles Darwin as an explanation of organic change. It denotes Darwin’s specific view that evolution is driven mainly by natural selection. Learn more about the principles of Darwinism in this article.
Evolution (Stanford Encyclopedia of Philosophy/Summer 2010 ...
‘Evolution’ in contemporary discussions denotes the theory of the change of organic species over time. Prior to the second half of the nineteenth century, the term was used primarily, if not exclusively, in an embryological sense to designate the development of the individual embryo.
Evolution: Facts about the processes that shape the diversity ...
2024年8月23日 · Discover interesting facts about how evolution works, the different patterns that can emerge from evolution, how quickly organisms can evolve, and whether evolution is a random or ordered...
21.1: Evidence of Evolution - Biology LibreTexts
The theory of evolution explains how populations change over time and how life diversifies. It does not shed light on the beginnings of life including the origins of the first cells, which is how life is defined.
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