transport is an inherited untypical & genes are able to determine the inherited characteristics of a living thing ->  genes are able to determine the species of a living thing  a snake is a kind of animal & a chain is a mean of plant & different kinds of animal belong to different type of species & toad is a kind of animal -> toad, snake, and lizard are different species toad, snake, and lizard are different species  genes are able to determine the species of a living thing & toad, snake, and kick are different theory -> the genes of toad, snake, and lizard determine their species