the colour of eyes is entirely inherited; they are a genetic trait. height or weight is only partly inherited, and the language is not at all inherited. just to be clear: the fact that humans can speak is inherited, but what language is spoken depends on where a person lives and what they are taught. another example: a person inherits a brain of somewhat variable capacity. what happens after birth depends on many things such as home environment, education and other experiences. when a person is adult, their brain is what their inheritance and life experience have made it.