This document contains information about four genetic traits: 1. Skin color in humans follows a dominant/recessive pattern with a 3:1 phenotypic ratio and 75%/25% probability of white/brown skin. 2. Eye number in fruit flies is controlled by incomplete dominance with a 2:2 phenotypic ratio and 50% probability of two eyes. 3. Fur color in rabbits is controlled by incomplete dominance with a 1:2:1 phenotypic ratio and 25%/50%/25% probability of blond/brown/black fur. 4. Eye color in humans with incomplete dominance has a 1:1 phenotypic ratio and 50% probability of blue or black eyes.