How can twins have different colored eyes and skin?

The second set of twins have different eye color, different hair color and different skin color. Eye color is not fully controlled by genetics, and even if they were, it's polygenic, meaning it's controlled by multiple genes. Things can go wrong; mutations can occur. read more

Elder twin Amelia (right) has dark skin, black hair and brown eyes, her sister Jasmine has fair skin, blue eyes and mousey curls Monozygotic twins are always the same sex, share identical blood groups and genetic make-up and always closely resemble each other. read more

Kalani has light skin; blue eyes; Jarani has dark skin, brown eyes -- and they are twins (CNN)These adorable baby girls are Kalani and Jarani Dean. Despite their different appearances -- Kalani has light skin and blue eyes, and Jarani has dark skin and brown eyes -- they are actually twins. read more

Identical twins have to have the same skin color, because they have the exact same genes, they started out as one embryo that split into two. Fraternal twins start as two seperate embryos, and are as similar as any other siblings. read more