uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
The evolution of sex-specific grandparental harm
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Evolutionary Biology.
2010 (English)In: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 277, no 1694, 2727-2735 p.Article in journal (Refereed) Published
Abstract [en]

Recent empirical studies indicate that grandparents favour some categories of grandchildren over others. Here, we expand the previous theoretical foundation for this finding and show that grandchild-harming phenotypes are predicted to evolve by 'sexually antagonistic zygotic drive (SA-zygotic drive) of the sex chromosomes'. We use the logic of Hamilton's rule to develop a new 'no-cost-to-self nepotism rule' that greatly simplifies the determination of the invasion criteria for mutations that cause grandparents to harm grandchildren. We use this theory to generate predictions that distinguish SA-zygotic drive from theory based solely on paternity assurance. The major diagnostic prediction is that grandmothers, and to a lesser degree grandfathers, will evolve grandson-harming phenotypes that reduce the level of sib competition experienced by their more closely related granddaughters, especially in their sons' families. This prediction is supported by data from recent studies showing (i) grandmothers invest more in granddaughters than grandsons, and counterintuitively, (ii) paternal grandmothers reduce the survival of their grandsons. We conclude that SA-zygotic drive is plausibly operating in humans via sexually antagonistic grandparental care.

Place, publisher, year, edition, pages
2010. Vol. 277, no 1694, 2727-2735 p.
Keyword [en]
grandparental care, Hamilton's rule, sexually antagonistic zygotic drive, sex chromosomes
National Category
Biological Sciences
URN: urn:nbn:se:uu:diva-132259DOI: 10.1098/rspb.2010.0409ISI: 000280320900018OAI: oai:DiVA.org:uu-132259DiVA: diva2:357342
Available from: 2010-10-18 Created: 2010-10-18 Last updated: 2010-12-08Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Evolutionary Biology
In the same journal
Proceedings of the Royal Society of London. Biological Sciences
Biological Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 225 hits
ReferencesLink to record
Permanent link

Direct link