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.
Definition. Patau syndrome, also called trisomy 13, is a congenital (present at birth) disorder associated with the presence of an extra copy of chromosome 13. The extra chromosome 13 causes numerous physical and mental abnormalities, especially heart defects.