a food preference is a kind of preference & preferences are generally learned characteristics ->  food preference is a kind of learned characteristics  food preference is a kind of learned characteristics & learned characteristics are similar to acquired characteristics ->  food preference is a kind of acquired characteristics  an animal is a kind of organism & a dog is a kind of animal ->  a dog is a kind of organism  food preference is a kind of acquired characteristics & a dog is a kind of organism & an organism 's environment affects that organism 's acquired characteristics -> the food preference of a dog is affected by its environment