BIOL 11000 Lecture Notes - Lecture 23: Social Darwinism, Human Head
20 Dec 2017
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Evolution is a theory about the origin of life a. Organisms are always getting better through evolution a. Evolution means that life changed "by chance" a. Correction: better-adapted to their environment survives, not random. "survival of the fittest" means i do what"s best for my species. Giraffes evolved long necks because they needed them to reach food. Correction: well-adapted individuals survive and pass on their genes. Natural selection gives organisms what they "need" a. Correction: in scientific terms, a theory is a hypothesis with a large body of supporting evidence, and nothing that has ever disproven it. Gaps in the fossil record disprove evolution a. Correction: many transitional fossils, but lack of fossils does not disprove the theory. Correction: what we know is based on discoveries and is always changing; evolution is the only well-supported explanation. The environment determines whether a species is well-adapted. Natural selection gives organisms what they need so they can survive.
