Assertion: altruism | /r/HasProperty | directed at other bearers of green beards
Facets:
Source sentences:
text: Hamilton (and later Richard Dawkins) illustrated this point by showing that a gene that both coded for a distinctive phenotype — such as a green beard — and also predisposed the individual towards altruism directed at other bearers of green beards could be favoured by selection, even when social partners are not close kin.