Kindle Fire tablets. Print. Amazon's Kindle Fire tablets (the Kindle Fire, Fire HD, and Fire HDX) are compatible with Kindle Books (available to U.S. libraries only), but they offer more sophisticated web browsing capabilities than Kindle eReaders and can install OverDrive's app (available worldwide).
A polygenic trait, is a trait that nonallelic genes control. These traits result from one or more genes contributing to the phenotype. An individual's physical appearance is determined by chromosomal inheritance and genotypic ratio. This phenomenon is known as Mendel's Laws of Inheritance.
Human skin, hair, and eye color are also polygenic traits because they are influenced by more than one allele at different loci. The result is the perception of continuous gradation in the expression of these traits.