caesar novus Posted August 8, 2011 Report Share Posted August 8, 2011 (edited) There are observations of imbalances of gender ratios thru history or in sectors of a society. The most recent example is a deficit of perhaps 100 million baby girls in Asia - said to be due to modern sex selection technology in http://www.unfpa.org/gender/selection.html or more in depth at http://www.foreignpolicy.com/articles/2011/06/27/where_have_all_the_girls_gone?page=full . But there is a Trivers-Willard explanation that could apply to not only recent times but all thru history http://en.wikipedia.org/wiki/Trivers Edited August 8, 2011 by caesar novus Quote Link to comment Share on other sites More sharing options...
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