My homebrew is like this, but I haven't run it yet. It's supposed to have a little more of a Robert Howard type feel. To compensate for the lack of race choices, I made culture packages. Depending on where you spent your formative years, you get two extra class skills (or a +1 bonus if either of your selections are already class skills for your starting class). Similar to d20 Modern.
For example, the Prala are a wandering race similar to gypsies but with a strong sailing/boating tradition. They have the following racial skill choices: Appraise, Bluff, Disguise, Innuendo, Profession (Sailor), Pick Pockets, Use Rope. The player must choose two from the list during character creation.
If the character grew up among the Prala, even if their blood is of a different people, they use these traits. It's not the genes, but the upbringing.