A U.S. state (abbreviation of United States state) is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the
exists and is an alternate of . The sequence of DNA bases (thymine, cytosine, adenine, and guanine) code for specific traits. The number of and which alleles you have (coded for my the DNA=genes) will determine traits such as eye color.
The Genetics of Eye Color. The genetics of eye color are complex, and there are many variations of eye color among humans. These variations occur because more than one gene controls the expression of the trait, in fact, over 15 different genes have been associated with eye color inheritance.