Kin Selection

 

Kin Selection is defined as when an organism favors the reproductive success of their own relatives even if it doesn't come at a benefit to that organism. 

Altruism is defined as actions of an organism that benefits the fitness of another but is costly to the fitness of oneself. 

I think that Kin selection and altruism can go hand in hand. I would say that kin selection is altruistic because there is an act to benefit another and not benefit oneself. Hamiltons rule is when altruism is favored by natural selection.  

Hamiltons Rule shows: r B > c

where r is the relatedness, B is the benefit of the recipient, and c is the cost to the altruist