NCIt definition : Human ASIP wild-type allele is located within 20q11.2-q12 and is approximately 75
kb in length. This allele, which encodes agouti-signaling protein, plays a role in
the regulation of melanogenesis. Homozygous polymorphism in the 3' untranslated region
of the gene is associated with an increased likelihood of having dark hair and brown
eyes.;