Editing Evolutionary game theory (section)

===Eusociality and kin selection===
[[File:Meat eater ant feeding on honey.jpg|thumb|[[Iridomyrmex purpureus|Meat ant]] workers (always female) are related to a parent by a factor of 0.5, to a sister by 0.75, to a child by 0.5 and to a brother by 0.25.
Therefore, it is significantly more advantageous to help produce a sister (0.75) than to have a child (0.5).]]
{{main|Eusociality}}

[[Eusocial]] insect workers forfeit reproductive rights to their queen. It has been suggested that kin selection, based on the genetic makeup of these workers, may predispose them to altruistic behaviours.<ref>{{cite journal | last1=Hughes | last2=Oldroyd | last3=Beekman | last4=Ratnieks | year=2008 | title=Ancestral Monogamy Shows Kin Selection Is Key to the Evolution of Eusociality | journal=Science | volume=320 | issue=5880| pages=1213–1216 | doi=10.1126/science.1156108 | pmid=18511689 |bibcode=2008Sci...320.1213H | s2cid=20388889 }}</ref> Most eusocial insect societies have [[haplodiploid]] sexual determination, which means that workers are unusually closely related.<ref>{{cite journal | last1=Thorne | first1=B. | year=1997 | title=Evolution of Eusociality in Termites | journal=Annual Review of Ecology and Systematics | volume=28 | issue=1| pages=27–54 | doi=10.1146/annurev.ecolsys.28.1.27 | pmc=349550 }}</ref>

This explanation of insect eusociality has, however, been challenged by a few highly-noted evolutionary game theorists (Nowak and Wilson)<ref>{{cite journal | last1=Nowak | first1=Tarnita | last2=Wilson | year=2010| title=The evolution of eusociality | journal=Nature | volume=466 | issue=7310| pages=1057–1062 | doi=10.1038/nature09205 | pmid=20740005 | pmc=3279739|bibcode=2010Natur.466.1057N }}</ref> who have published a controversial alternative game theoretic explanation based on a sequential development and group selection effects proposed for these insect species.<ref>{{cite journal | last1=Bourke | first1=Andrew | year=2011| title=The validity and value of inclusive fitness theory | journal= Proceedings of the Royal Society B: Biological Sciences| volume=278 | issue=1723| pages=3313–3320 | doi=10.1098/rspb.2011.1465| pmid=21920980 | pmc=3177639}}</ref>