The Selfish Grandma Gene: The Roles of the X-Chromosome and Paternity Uncertainty in the Evolution of Grandmothering Behavior and Longevity

Table 2

Data from Fox et al. [12] analyzed according to predictions based on SA-zygotic drive model (Rice et al. [8]). PGM: paternal grandmother; MGM: maternal grandmother; SA: sexually antagonistic; GD: granddaughter; GS: grandson. Check mark indicates that the population data in Fox et al. does conform to the Rice et al. prediction, and a dash indicates that it does not.

Population	PGM helps GD and harms GS	MGM helps GD and harms GS
Germany	✓	—
England	✓	—
Ethiopia	✓	—
Canada	✓	—
Japan	✓	—
Gambia	—	—
Malawi	✓	—