Bottleneck Theory

Some articles on bottleneck theory, bottleneck:

Toba Catastrophe Theory - Genetic Bottleneck Theory
... suggested, in an article in the October 1993 edition of Science, that a bottleneck in human evolution about 50,000 years ago could be linked to the Toba eruption ... The bottleneck theory was then further developed by Ambrose in 1998 and Rampino Ambrose in 2000, who invoked the Toba eruption to explain a severe culling of the human population ... According to the supporters of the genetic bottleneck theory, between 50,000 and 100,000 years ago, human population suffered a severe population decrease—onl ...

Famous quotes containing the word theory:

    We commonly say that the rich man can speak the truth, can afford honesty, can afford independence of opinion and action;—and that is the theory of nobility. But it is the rich man in a true sense, that is to say, not the man of large income and large expenditure, but solely the man whose outlay is less than his income and is steadily kept so.
    Ralph Waldo Emerson (1803–1882)