Hamilton’s rule describes when alleles increase in frequency under this phenomenon. For 10 points each:
[10m] Name this phenomenon where an organism improves the reproductive success of its relatives at the detriment of its own.
ANSWER: kin selection [accept kin altruism; prompt on altruism]
[10h] This equation describes how a trait’s frequency evolves with time as the sum of a ‘selection’ term containing a covariance factor and a ‘transmission’ term. Hamilton’s rule can be derived from this equation.
ANSWER: Price’s equation
[10e] Siblings have this value for the coefficient of relationship, the r in Hamilton’s rule. Equivalently, two siblings have this proportion of genes in common due to shared parentage.
ANSWER: one half [accept 0.5 and other equivalents]