Hardy-Weinberg Equilibrium assumes that the allele frequency stays constant over time. The equation presumes there is no genetic flow, no mutation, no natural selection, random mating, and a large population. Hardy-Weinberg equation is used as a null hypothesis to determine if evolution is occurring in the species. Punctuated Equilibrium shows a sudden change in a species gene pool usually due to an environmental disaster after a long period of no change in the gene pool. This idea is demonstrated by the rise of mammals and the downfall of reptiles and other organisms.
References: Campbell, Neil, and Reece, Jane. AP EDITION BIOLOGY. San Francisco: Pearson, 2005.
References: Campbell, Neil, and Reece, Jane. AP EDITION BIOLOGY. San Francisco: Pearson, 2005.
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