ISS 220 Lecture Notes - Lecture 5: Sickle-Cell Disease
2 Feb 2017
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The appearance of so-called races in the us is the result of non-random migrations. American samples reflect population history, most notable gene flow. The question of human races has been tested. Using the criteria that are normally applied to non-human species, they do not exist. Why is evolution considered a theory not a fact. Because it is constantly changing, defined, and tested. Tttt tttt tt - 100% tt - 100% tt -> tt. Look at phenotypes and genotypes (look at blood groups example in book) Make sure to understand the important allele of sickle cell anemia (in the book) Understand the difference between acclimization and biological evolution. Acclimization is the changes made by an individual based on the climates. Makes you think about that genome can change because of many variables. Don"t forget wallace, also a part of being accredited for natural selection. Darwin is *not* accredited for evolution, just natural selection.
