澳门金沙最新官方网址

Putting it about

作者:宗觋    发布时间:2019-03-07 09:08:00    

PROMISCUITY has a genetic benefit—at least for false scorpions. Jeanne Zeh of the University of Nevada in Reno and her colleagues found that female false scorpions who had multiple partners have more healthy offspring than those who were monogamous, even though they received the same number of sperm (Proceedings of the National Academy of Sciences, vol 96, p 10 236). The researchers knew that the females tend to reject males with whom they have mated before (New Scientist, 21 November 1998, p 27), but their study shows the genetic benefits of such behaviour. Zeh thinks that the females are maximising their chance of finding a genetically compatible mate, and that the same probably applies to other species. “Female monogamy is now the exception rather than the rule,

 

Copyright © 网站地图