This means that each dominant allele "adds" to the expression of the next dominant allele. Usually, traits are polygenic when there is wide variation in the trait. For example, humans can be many different sizes. Height is a polygenic trait, controlled by at least three genes with six alleles.
False, the human skeleton has 206 bones as adults and 302 bones as a baby
Kingdom, phylum, class, order, family, genus, species
