Effects On Life
The causes of the bottleneck phenomenon—i.e., a sharp decrease in a species' population, immediately followed by a period of great genetic divergence (differentiation) among survivors—is attributed to volcanic winters by some researchers. According to anthropologist Stanley Ambrose, such events diminish populations to "levels low enough for evolutionary changes, which occur much faster in small populations, to produce rapid population differentiation". With the Toba bottleneck, many species show massive effects of narrowing of the gene pool, and it is believed Toba nearly exterminated humankind.
Read more about this topic: Volcanic Winter
Famous quotes containing the words effects and/or life:
“to become a pimp
Or deal in fake jewelry or ruin a fine tenor voice
For effects that bring down the house could happen to all
But the best and the worst of us . . .”
—W.H. (Wystan Hugh)
“Look, there’s nothing wrong with people being happy, but there’s more to life than turning on and screwing to Ravel’s Bolero.”
—Blake Edwards (b. 1922)