The greater your investment, the fussier your choice of mate.17 If each mating is costly, then you will choose judiciously: genes that code for rash choices are less likely to survive into the next generation. If, however, your investment is small, then another strategy is available: be less picky and have multiple mates. Genes that adopt this strategy of quantity over quality can still perpetuate themselves across generations, even if each offspring has less chance to survive.
