据《非自然选择》(Unnatural Selection)一书的作者赫维斯坦达尔的计算,目前,比印度情况恶劣的国家只有中国,中国人口之中,男女比例是一百二十一比一百。
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非自然选择:重男轻女,世上有那么多男人的后果。
Unnatural Selection: Choosing Boys Over Girls, and the Consequences of a World Full of Men.
在本书中我们回顾了多种多样非自然选择的性状遗传。
In our book we review a large and varied selection of non-environmental constraints on trait transmission.
研究者发现以前发现的许多遗传学选择特征也许更多的来源于历史和人口学因素而非自然选择。
The researchers found that many previously identified genetic signals of selection may have been created by historical and demographic factors rather than by selection.
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