As the degree of genetic relatedness decreases from 0.5 (e.g., siblings, parents) to 0.25 (e.g., half-siblings, aunts, uncles, nieces, nephews) to 0.125 (e.g., cousins, children of half-siblings), there is a concomitant ________________.

Question

Quizplus · Accepted Answer

CAltruism and kin selection are both predicted to decrease as genetic relatedness decreases. This is because both concepts are rooted in the idea that individuals are more likely to help relatives with whom they share a greater proportion of genes. As the degree of genetic relatedness decreases, the evolutionary incentive to behave altruistically or to engage in kin selection diminishes.

As the Degree of Genetic Relatedness Decreases from 0