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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.
Jul 13, 2024 · Evolution is the process of descent with modification that explains how living things on Earth have originated from common ancestors. Learn about the evidence, history, types, and examples of evolution from Britannica's experts.
Evolution 101. An introduction to evolution: what is evolution and how does it work? The history of life: looking at the patterns – Change over time and shared ancestors; Mechanisms: the processes of evolution – Selection, mutation, migration, and more; Microevolution – Evolution within a population; Speciation – How new species arise
Scitable provides an overview of evolution, genetics, and biodiversity, and how they shape ecology. Explore the mechanisms, examples, and applications of microevolution and macroevolution, and the role of molecular techniques in studying evolution.
In biology, evolution is the process of change in all forms of life over generations, and evolutionary biology is the study of how evolution occurs. Biological populations evolve through genetic changes that correspond to changes in the organisms ' observable traits .
Jun 8, 2024 · Learn about the process by which human beings developed from now-extinct primates, and the fossil evidence and scientific models for this history. Explore the human lineage, the human family bush, and the human family tree.
Apr 16, 2024 · Evolution 101. An introduction to evolution: what is evolution and how does it work? The history of life: looking at the patterns – Change over time and shared ancestors; Mechanisms: the processes of evolution – Selection, mutation, migration, and more; Microevolution – Evolution within a population; Speciation – How new species arise
