Genes on chromosome 4 Create Talk0 Category page This page needs content. You can help by adding a sentence or a photo! Add to this page! “ Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Individual... Melatonin receptor 1A Pages in category "Genes on chromosome 4" This category contains only the following page. M Melatonin receptor 1A Retrieved from "http://psychology.wikia.com/wiki/Category:Genes_on_chromosome_4"