BIO 362 Lecture Notes - Lecture 8: Turkana Boy, Radioactive Decay, Positron
Document Summary
Topic 8: how and when we became human- fossil record 1. Try every moment to falsify every theory. Genetic desigm infofrmation animal social behavior (kin selection dominant) human social behavior (social coercion theory dominant) Unique acceleration of human lineage- strong and fast ultimate cause is elite aimed throwing. Radiological dating to figure out approximate age. Chimps and gorillas much more alike each other ancestor 1 and 2 more like apes than us- we do not descend from chimps, but rather a common ancestor which is more chimp-like. Free hands to do all kinds of things- falsified by fossil footprints 2 millions before homo emergence aka austrolipeths were walking beforehand. Tectonic plates, circulation currents, heat vents- climate led to drying of africa, context for human emergence. Pelvis- bipedal human and chimp is different structure because of rxn forces- lucy pelvis looks more like ours because redesigned to work upright, but not to throw.
