Words similar to non-kin

Example sentences for: non-kin

How can you use “non-kin” in a sentence? Here are some example sentences to help you improve your vocabulary:

As we've also seen, these genes can be "fooled" into encouraging altruism toward non-kin, altruism that presumably is not self-serving at the genetic level.
Nonetheless, (1) the low motility of females, and the fact that they live mostly on long-lived woody plants, means that maternal kin may interact over long timescales, as in social insects; (2) some scale insects appear to make relatively sophisticated social decisions about where to settle, settling nearer to (and thus possibly competing more closely with) non-kin than kin (Kasuya 2000); (3) although most scale insects use phloem sap, an almost inexhaustible resource, armored scales use parenchyma tissues (Rosen 1990), which may be locally exhausted, and therefore may compete against neighbors for food.
When genes confine altruism to kin, and deny it to needy non-kin, they are in fact failing spectacularly to be efficiently selfish.
Yet despite this display of theoretical competence, there is no empirical evidence of non-kin cooperation in a situation, natural or contrived, where the payoffs are known to conform to a Prisoner's Dilemma".