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Explore Charles Darwin's theory of evolution, the evidence supporting it, and how it shapes our understanding of life. Discover the mechanisms of evolution, its impact on human history, and its relevance in modern science.
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Isn’t evolution just a theory? Yes—It is like gravity. You see the effect, but you don’t immediately see the evidence or cause. There is a lot of evidence but there are still arguments made by scientists left to be resolved.
Who was Charles Darwin? • Charles Darwin was an English naturalist • the founder of the Theory of Evolution by Natural Selection—he studied the rise of new species • Published author of The Origin of the Species • Med student prior to his voyage on the Beagle • First to theorize that we all evolved from a common ancestor—The Branching Tree.
How do we know evolution happens? • The fossil record • Can connect organisms living today to a common ancestor • Fossils are compared to similar looking organisms that are alive today and are studied to discover how they relate to each other
How does evolution really work? • Natural selection • Genetic variations • Struggles for existence (competition) • Reproduction --overproduction • Characteristics or traits that help an organism survive are passed down over millions of years • Adaptations—Ex-hummingbirds’ beaks
Did humans evolve? • Yes—all organisms share a common ancestor. We share common characteristics and similar DNA to other organisms • Over time, variations and mutations in DNA cause the rise of new species.
Why does evolution matter now? • Variations can be helpful to protect you against certain microbial dangers • Variations can also be harmful in leaving you vulnerable to certain microbial dangers • Evolution is key to understanding diseases—we can project ideas gained from the study of evolution to help guide our future studies.