A common phrase in the vocabulary of many geneticists is molecular markers. Molecular markers are DNA fragments that can be used as a fingerprint in the identification or characterization of individuals. These markers have become an increasingly helpful tool in genetic research and applications to biotechnology. The basic premise behind molecular markers is that there is natural genetic variation in individuals, and many genetic sequences are polymorphic, meaning they differ among individuals. Molecular markers seek to exploit this variation to identify individuals, traits, or genes on the basis ...