Class notes
Evolution
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Evolution is the gradual development of life on Earth over billions of years, explaining the diversity of species. It is driven by natural selection, genetic mutations, and adaptations, as proposed by Charles Darwin. Through variation, individuals with advantageous traits survive and reproduce, passing on these traits. Over time, this leads to speciation, where new species emerge. Evidence for evolution includes fossils, comparative anatomy, embryology, and molecular biology. Key milestones include the origin of single-celled organisms, multicellularity, the Cambrian explosion, and the rise of humans. Evolution connects all life forms, highlighting a shared ancestry and the dynamic nature of life.
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Written for
- Course
- Biology notes class 12 CBSE
All documents for this subject (1)
Document information
- Uploaded on
- January 25, 2025
- Number of pages
- 25
- Written in
- 2024/2025
- Type
- Class notes
- Professor(s)
- Anil kumar
- Contains
- All classes
Subjects
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evolution introduction
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origin of life
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origin of earth
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origin of universe
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evidences of evolution
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natural selection
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origin of animal
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theories of origin of life
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