I wonder if this has anything to do with the persistence of social class among humans. Posted on February 11, 2015August 13, 2025 by Justin Durand I wonder if this has anything to do with the persistence of social class among humans. http://phys.org/news/2015-01-chimps-higher-ranking-moms.html//cdn.embedly.com/widgets/platform.js Share this: Click to print (Opens in new window) Print Click to email a link to a friend (Opens in new window) Email Like this:Like Loading...