sentences:  Conventionally, the four Fs were described as adaptations which helped the organism to find food, avoid danger, defend its territory, et cetera.However, in his book "The Selfish Gene", Richard Dawkins argued that adaptive traits do not evolve to benefit individual organisms, but to benefit the passing on of genes.In the case of vertebrates, this list corresponds to the motivational behaviours that drive the activity in the hypothalamus.