Genetic Examples

Various traits are inherited through different means. Some are controlled by dominant and recessive genes. Others have genes that show incomplete dominance. Still others are controlled by multiple alleles (some of which are dom/recess and others are incomplete dominance). Some traits are sex linked (located on the X chromosome only and not on the Y). And other physical traits show up because of mutations or errors in meiosis, causing either changed or deleted information or, in the case of a "trisomy", too much information because of too many chromosomes (3 rather than the normal 2). This review will help you sort out these different types of inherited traits.