Example image of eyePlorer eyePlorer map for 'Price equation': Evolution Natural selection George R. Price Kin selection W. D. Hamilton Fitness (biology) Average Covariance Expected value Probability Sample mean and sample covariance Recurrence relation Fisher's fundamental theorem of natural selection Tautology (logic) Economics Linear Sickle-cell disease Variance Amino acid DNA Genetic code WΔZ The Genetical Evolution of Social Behavior Group selection Altruism in animals Altruism