BIOLOGY 1M03 Chapter Notes - Chapter 24: Rifampicin, Antimicrobial Resistance, Sebaceous Cyst
15 May 2017
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Document Summary
Evidence of evolution: change through time (fossils), extinction, vestigial traits, inter- relatedness. Evidence of natural selection: industrial melanism, antibiotic resistance, beak size in galapagos finches. Species: change throughout time, are related by common ancestry ex. Fossils: trilobite fossil from bc, canada; 505 million yrs old, hominoid footprints from tanzinia 3. 6 million yrs old. Extinction: many fossils provide evidence for extinct species, those that are no longer living. Prehistoric turds and ancient dna: groundhog very large feces. Transitional forms: as the fossil record has been come more complete, many transitional forms have been discovered with traits that are either intermediate between earlier and later species. Limb development and loss, feathers and flight, upright posture and brain size in humans, jaws in vertebrates. Vestigial traits: loss or gain of a trait. Loss of long tails in apes (only human coccyx bone) Hind limbs of a baleen whale and pelvic spurs on a python.
