Extension of Mendel's Law
You're not either light or dark toned, you can be anywhere in between. It follows his laws but is an extension because dominance can vary.
Careers & Health!
Medical Geneticist- Trained for patience with genetically linked diseases. This can be helpful in the skin genetics because you can get skin cancer which can have different pigment traits on your skin. Or your body could not produce melanin but if it produces too much than it can become cancerous