* Hair: Hair is a complex characteristic. A person can inherit a wide variety of hair colors, types, and textures, including wavy, curly, straight, thick, and thin hair. All types of hair traits are dependent upon a combination of genes from each parent.
* Freckles: Freckles are small, concentrated spots of melanin (the pigment that gives skin and hair color). They're caused by exposure to sunlight, but a person's genetic makeup determines whether they'll develop freckles at all. Freckling is associated with the presence of a particular variant of the MC1R gene.
* Dimples: Dimples are small indentations in the cheeks, and sometimes the chin. They are often said to be caused by variations in the facial muscles. Dimples are generally considered an inherited trait. Some studies suggest that dimples are dominant trait, while others suggest that they are recessive.