Is it possible to set profile fields so that no "default" is selected for select lists when a user signs up?

I can't seem to find a way to have the top choice of a select list be blank or something like "select" so that one of the options is not chosen by default. The fields are all required so just putting the work "select" as the top options will not work unless there is a snippet out that that will interpret "select" as an empty field. Any help is welcome...