What is the example of kin selection?

Kin selection is an evolutionary strategy that favors the reproductive success of an organism's relatives, even at a cost to the organism's own survival and reproduction. A classic example is the behavior of worker bees, which forgo their own reproduction to help the queen bee produce more offspring. By assisting their siblings, the workers indirectly pass on shared genetic material, enhancing the overall fitness of their genetic lineage. This behavior illustrates how altruism can evolve when it benefits closely related individuals.