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"猴子八戒各有其爱" 的科学基础
一个因为缺乏科学方法而进展缓慢的科学领域
文化和价值取向可以影响基因漂变
现实中有的人和有的人“一见钟情”,有的人和有的人永远也不可能彼此喜欢,更不可能堕入“爱河”,成就“姻缘”,把彼此的“基因”传下去...
我很早就发现人群中确实存在着这么一种“择美筛子”,在某些人眼里认定是“美”的,在另一些人眼里可能会有发自心底的嫌弃...
对于“美”的认定心理会影响人基因库里“基因”频率吗?
假如我们承认和美是一种基因决定的“性状”,而且社会中的婚姻完全是自主决定,那么“美”就有可能成为一个基因选择筛子,“美”成为一种基因选择瓶颈。
遗传漂变(Genetic Drift)
基因传递的“瓶颈效应”(Bottlenecking Effect)
先证者效应
Genetic drift
Genetic drift is a mechanism of evolution in which allele frequencies of a population change over generations due to chance (sampling error).
Genetic drift occurs in all populations of non-infinite size, but its effects are strongest in small populations.
Genetic drift may result in the loss of some alleles (including beneficial ones) and the fixation, or rise to 100% frequency, of other alleles.
Genetic drift can have major effects when a population is sharply reduced in size by a natural disaster (bottleneck effect) or when a small group splits off from the main population to found a colony (founder effect).
这个破网真难用,不知道什么原因总出故障!
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