Some traits are produced by multiple genes acting together to produce the phenotype. Because more than one gene is involved in producing the trait, these traits would not follow the ratios predicted by Mendelian laws. Examples of traits produced by multiple genes are height and eye color. For example, say height in a plant is determined by three genes (A, B, and C), and each dominant allele present in the three genes has an additive effect on the plant’s height. The more dominant alleles a plant inherits, the taller the plant will be. A plant with the genotype AABBCC would be very tall, a plant with the genotype aabbcc would be very short, and a plant with the genotype AaBbCc, AAbbCc, or other genotypes would result in a height in the middle of the range.