ANTH 1001 Study Guide - Catastrophism, Macroevolution, Punnett Square
Document Summary
The mechanism of change is natural selection: middle ages, stasis the world was created as it existed and it did not change, religious beliefs great chain of being, political system hierarchy, natural world things did not change, mid 15th 18th centuries, renaissance & enlightenment advances in technology, exploration explorers began to discover new land. Recessive inherit 2 alleles for it to be fully expressed: cystic fibrosis abnormal secretions; develop lung disease, tay sachs degeneration of the nervous system; death 2 3 years, pku not able to metabolize> buildup of amino acids; can be controlled by diet, carriers can carry one copy of the harmful allele, heterozygote expression carry the one copy and have some type of expression (advantages & disadvantages). Changes in allele frequencies that occur when a subpopulation is formed from a larger one. population is drastically reduced in size. Some alleles may be lost from the -->gene pool as a result of random events.
