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Hace 6 días · Evolution is the process of descent with modification that explains the origin and diversity of living things on Earth. Learn about the evidence, history, types, and examples of evolution from Britannica's experts.
Evolution is the change in the heritable characteristics of biological populations over successive generations. It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations.
Mechanisms: the processes of evolution – Selection, mutation, migration, and more; Microevolution – Evolution within a population; Speciation – How new species arise; Macroevolution – Evolution above the species level; The big issues – Pacing, diversity, complexity, and trends; Teach Evolution. Lessons and teaching tools. Teaching ...
9 de feb. de 2024 · Learn how species evolve through natural selection and adapt to different factors in their environment. Explore examples of evolution in finches, coral reefs, humans, and crocodiles with activities and videos.
Evolution is a process that results in changes in the genetic content of a population over time. Explore the mechanisms of microevolution and macroevolution, and how they shape biodiversity and ecology.
How do new species form? This article reviews the historical and modern views on speciation, from Darwin to genomics, and explores the role of geography, genetics, and natural selection in the process.
