NOTE 20A: Where eggs are laid is likely to depend on the mother’s genotype, whereas whether they will survive depends on their own genotype. In this example, the interests of parent and offspring are the same: We can assume that what is maximized is the number of surviving offspring produced by the mother. In Chapter 21, we look at examples where there are conflicts between parent and offspring, so that the outcome depends on whose genotype is in control (see p. 604).