ANTH 1 Lecture Notes - Lecture 5: Mendelian Inheritance, Genetic Drift, Gene Pool
13 Oct 2020
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Document Summary
Mendel traits passed in systematic and predictable way. Unified branches of biology and affiliated sciences. Genetics, taxonomy, morphology, comparative anatomy, paleontology, and physical anthropology. Misconception: evolution is a theory about the origin of life. Natural selection is a theory for the process of biological change from generation to generation. Misconception: evolution cannot be observed or tested. Many other sciences do not involve direct observation. Misconception: the process of evolution is totally random. New variants in physical traits are caused by random mutations in the underlying genes. The process of natural selection is not random. Variant provides a benefit in a given environment = increases in frequency in the. Misconception: evolution gives organisms what they need population. The trait must first arise randomly through mutation; many traits good enough to help organisms survive. Natural selection spreads adaptations to a specific environment. Many traits don"t provide a large benefit or disadvantage in a given environment.
