When a population is NOT evolving, it is in a situation called__________.

Question

anonymous · Answer

its said to be in Hardy-Weinberg equilibrium. This is when the frequency of alleles from generation to generation are basically the same. In order for the population to be in equilibrium the following conditions must be met: 1)mating must be random, 2) chance events can not occur (such as hurricanes, tornados, meterorites, etc.) 3) gene flow from different populations do not occur, 4) mutation must not occur, and 5) there must be no selection pressure. Natural populations rarely meet these conditions and as a result are usually undergoing some sort or evolution such as genetic drift. Hope that helps.

blues · Answer

http://answers.yahoo.com/question/index?qid=20071216151149AAPi9qm