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I may be adopted, but I look just like my dad

I may be adopted, but I look just like my dad

作者:屈突绩骠  时间:2019-03-07 06:14:06  人气:

MALE house sparrows “inherit” the plumage on their chests from their fathers—but the process has more to do with nepotism than genes. House sparrows use a “badge” of dark feathers on their chests to attract mates. To study the inheritance of this trait, Simon Griffith of the University of Uppsala in Sweden and his colleagues fostered some chicks with birds that were not their biological parents. To the researchers’ surprise, these birds developed badges similar to those of their foster fathers rather than their biological parents (Nature, vol 400, p 358). Males with big badges tend to be successful and may help the young birds by giving them social and nutritional advantages while they are growing their own. “It’s a bit like inheriting money rather than genes,