has causal or contributing genetic variation Hemoglobin D Trait Hemoglobin D-Punjab Trait None Hemoglobin D-Punjab Trait causes no clinical or hematological alterations SCDO (Jade Hotchkiss) Request inclusion into NCIT below "Hemoglobin Trait". Hb AD-Punjab The inheritance of the gene for hemoglobin D-Punjab from one parent and a gene for normal adult hemoglobin (hemoglobin A) from the other parent. HBB, GLU121GLN